Fun Factory Bi Stronic Fusion: review

Fun Factory Bi Stronic Fusion in brief — here’s what you get

Fun Factory Bi Stronic Fusion is a pulsator, not a vibrator. The difference isn’t a marketing nuance but a construction difference: the product moves back and forth under its own power instead of merely shaking. On top of that pushing motion, there’s a second, completely separate motor in the wing-shaped arm that’s meant to sit against the clitoris. It’s that combination — self-driven bumps plus independent clitoral vibration — that makes this model one of the more unusual designs in the category.

The specification looks like this according to the manufacturer: total length 220 millimeters, diameter 40 millimeters, eight bump programs, six vibration settings, two separate motors, silicone surface, IPX7 enclosure rating, and charging via USB-C. In Sweden, the item is sold by five stores at prices between 599 and 795 SEK, and four of them have it in stock.

This review is exclusively about the magenta-colored variant with EAN 4255821800063, the manufacturer’s article number FF000949MG01. That number has been matched against Fun Factory’s own brand website, where exactly that EAN number is listed for this specific color variant — which is worth checking, because Bi Stronic Fusion has been sold under several color names over the years, and several of those have their own article numbers.

What is a pulsator, and how does it differ from a vibrator?

A typical vibrator has a motor that rotates an unbalanced weight. The weight throws the motor out of balance hundreds of times per second, and that shaking is transferred through the housing to the skin. It’s effective, but the motion is fundamentally a shaking — it doesn’t move in and out.

A pulsator works the other way around. Fun Factory refers in its manual to European patent 2320850 B1, and the patent text describes the principle plainly: a magnetized core is accelerated back and forth along the axis of the housing by electromagnetic coils, and the mass relationship between the core and the entire device is kept within a defined range to provide high amplitude at low frequency and a low noise level. So it’s not a rotating motor with an eccentric weight, but a linear mass that’s flung in two directions.

What it means in practice is that the product thrusts away by itself. What can be established is that it’s the whole point of the design: a pulsator is built to be used hands-free, while a vibrator is built to be held. This also explains why pulsators are almost always heavier than vibrators of the same size — there’s a moving mass inside that has to weigh something for the movement to be powerful. The manufacturer listed 362 grams for Bi Stronic Fusion in its own specification table, versus 295 grams for Stronic G and 336 grams for Bi Stronic Arc.

Compared with a classic rabbit vibrator like We-Vibe Nova 2, the difference is therefore not a matter of degree but of principle. Nova 2 vibrates in two points. Bi Stronic Fusion thrusts at one and vibrates at the other.

Two generations with the same name — which version are you buying?

The single most important piece of information in the entire text is that you don’t see it in any store table. Bi Stronic Fusion exists in two technically different generations, and they are sold under exactly the same name.

• The original — article number 4001106 (Violet), 4001131 (Candy Rose), and 4001135 (India Red). It was charged with Fun Factory’s magnetic charging cable, had a memory function and a touch lock, a 780 mAh battery, and was listed as 21.5 centimeters and 362 grams.
• The current — article number FF000949MG01, color Magenta, EAN 4255821800063. It charges via USB-C and is listed as 220 millimeters, eight thrust programs, and six vibration modes.

That’s the current one you get when you buy using the EAN listed at the five Swedish stores. The difference matters for two reasons. The first is charging: the old version required a product-specific magnetic cable that was easy to lose, while the new one charges with any USB-C cable. The second is that the numeric details that circulate on the internet about runtime, charging time, and battery capacity almost always come from the old version’s documentation, and that Fun Factory has not published corresponding values for the new one.

Another circumstance belongs in the picture. Bi Stronic Fusion is no longer available in the manufacturer’s own web shop catalog — the model has been replaced with Bi Stronic Arc, Embrace, Curve, Crave, and Immerse. That a model is discontinued by the manufacturer but still available from retailers is neither unusual nor a problem in itself, but it means two things: prices tend to fall, and the manufacturer’s own product details become harder to find.

Bi Stronic Fusion, Arc, or Embrace — which is which?

Fun Factory’s naming within the Bi Stronic family is more straightforward than with many other brands, but the models are close together and get mixed up in store lists.

• Bi Stronic Fusion — the model this text is about. 220 millimeters, Ø 40 millimeters, narrow wing-shaped clitoral arm, no grip eye.
• Bi Stronic Arc — the current successor. 223 millimeters and a full 79 millimeters in width, 336 grams, with an ergonomic LOOP grip that makes it much easier to control by hand. Materials: silicone, ABS plastic, and polycarbonate.
• Bi Stronic Embrace — 214 × 71 × 39 millimeters, 328 grams, sold in black and magenta. The same eight thrust programs and six vibration programs as Arc.

So the difference between them is not the number of programs, which several store texts suggest. All three current models are listed with eight thrust programs and six vibration programs. The difference is the shape: Fusion is the narrowest and the only one without a LOOP grip, which makes it most suitable for pure handsfree use and least suitable for someone who wants to actively control the movement with their hand.

Materials and build quality: silicone against the skin, plastic in the grip

The material issue is the only characteristic of an intimate product that can’t be compensated for with experience or care, and it determines whether the product is still hygienic after five years. Fun Factory lists silicone as the material in the part that is inserted and in the clitoral arm. The manufacturer’s manual describes the product as "adult toy made of body-safe silicone", and the archived specification table puts it as body-friendly materials that are hypoallergenic and non-porous.

What body-safe silicone means in practice

Silicone is a non-porous material. A non-porous surface can be cleaned, because there are no microscopic cavities where residue can get trapped. It’s the single most important property of a material that is meant to sit against mucous membrane, and that’s why the material declaration weighs more heavily than almost all other entries in a specification. That the manufacturer also explicitly writes "nicht porös" is unusually clear for the category.

That said, there is a real limitation in the information available. Fun Factory does not publish a breakdown of materials per part for Bi Stronic Fusion specifically. For the sister model Bi Stronic Arc, the manufacturer lists silicone, ABS plastic, and polycarbonate, and for Stronic G it lists silicone and ABS plastic. That Fusion would be built in a fundamentally different way is unlikely—the glossy handle part in the product images is clearly not silicone—but since the manufacturer doesn’t state it, it shouldn’t be claimed here either. What can be confirmed is that the inserted part and the arm that lies against the clitoris are silicone, and that the handle is made of another material that the manufacturer does not specify.

Phthalates, BPA, and latex — why the material declaration is important

Phthalates are a group of plasticizers used to make plastic—above all, soft PVC—flexible. Kemikalieinspektionen describes them as substances that can affect the hormone system and make reproduction more difficult, and several of them are therefore restricted or banned within the EU in a large number of products. This product category is repeatedly subject to supervision precisely because it contains soft plastic against skin and mucous membranes.

Here Fun Factory differs from several competitors in a way that deserves a note. The manufacturer does not state any explicit declaration that Bi Stronic Fusion is free from phthalates, BPA, and latex. We-Vibe does for Nova 2, with the wording body-friendly silicone made without phthalates, BPA, and latex. Fun Factory’s formulation stays with body-friendly, hypoallergenic, and non-porous materials.

It shouldn’t be overinterpreted. Silicone does not require phthalate plasticizers to become soft—the softness comes from the polymer’s own structure—and an indication that it is “silicone” is in itself far better information than labels like TPE or jelly rubber, which say nothing at all about which plasticizers are included. But the one who specifically wants the assurance in black and white gets it from We-Vibe and not from Fun Factory.

Dimensions and weight: 220 millimeters, 40 millimeters in diameter—and 362 grams

The manufacturer specifies the current version as a total length of 220 millimeters and a diameter of 40 millimeters. The previous version’s specification table listed 21.5 centimeters and Ø 4 centimeters. A five-millimeter difference between the manufacturer’s two own stated figures is, in practice, irrelevant for use, but it’s worth knowing if you compare numbers between sites and wonder why they don’t match. The Swedish shops list 22 centimeters, i.e. rounded to the newer information.

Forty millimeters in diameter is noticeably large in this category. For comparison, Fun Factory states 49 millimeters in width for Stronic G and 79 millimeters for Bi Stronic Arc—but Arc’s figure includes the LOOP grip, not the shaft. The store texts describe the tip as tapering, which means that the circumference is built up gradually rather than being directly at the top.

The insertion depth is not published by the manufacturer. It’s one of the most requested pieces of information for a product of this type, and it’s missing from all manufacturer sources. What can be reasoned about is that the clitoris arm sits a bit up on the shaft and that, in practice, it sets the limit—but where exactly that limit is, the manufacturer does not state, and it shouldn’t be guessed.

The weight of 362 grams comes from the manufacturer’s own specification table for the earlier version. It is heavy compared with a typical vibrator, and that is deliberate: the mass is part of how the thrust movement is created. It has two consequences. One is that the product sits firmly when used hands-free. The other is that it is noticeably heavier in the hand than a rabbit vibrator of the same size—Fun Factory lists 328 grams for Bi Stronic Embrace and 336 grams for Bi Stronic Arc, so the same order of magnitude within the family.

Eight thrust programs, six vibration modes, and two motors

The basic construction is two motors that are controlled independently. One drives the thrust movement in the shaft, the other the vibration in the clitoral arm. The manufacturer specifies eight thrust programs and six vibration modes for the current version, and the same split applies across the entire current Bi Stronic family—Arc and Embrace are listed with exactly the same eight plus six.

What can be established is that two independent controls are something other than a combined program. You can run strong thrust movement with weak clitoral vibration, or vice versa, and the two settings are completely different even though both are centered on their respective scales. A rabbit vibrator with a single program control switches everything at once.

How the thrust function works, purely from a technical standpoint

The patent that the manufacturer refers to describes the mechanism: electromagnetic coils accelerate a magnetized ferromagnetic core back and forth parallel to the housing’s axis. The core’s movement is transferred to the entire housing, and the patent text explicitly emphasizes that the relationship between the core’s mass and the mass of the entire device is kept within a defined range to provide a relatively high amplitude at low frequency and an essentially silent operation.

That explains three things at once. That the product weighs 362 grams is not carelessness but construction—the mass is needed. That the movement feels slower and more defined than a vibration is a direct result of low frequency and high amplitude. And that the manufacturer markets the technology as quieter than rotating motors has at least some technical basis in the patent text, even if it is not the same as a measurement.

A practical consequence that is rarely mentioned: because the entire housing moves, the product needs something to brace against. That is why pulsators normally work best lying down or in a semi-sitting position, and worse if you hold the product still in the air. The clitoral arm serves a dual function here, because it acts as resistance against the body.

Clitoral arm: the wing-shaped part and what it covers

The outer arm is shaped like a wing rather than like the classic rabbit ear. The shop’s product text describes it as an elegant wing-shaped clitoral stimulator that teases both the clitoris and the labia at the same time, and that description matches the product’s shape in the manufacturer’s own pictures: the arm is wide and flat instead of narrow and pointed.

It’s a trade-off. A wider contact area is more forgiving when it comes to placement and depends less on the product sitting exactly right, which is a real advantage in a product intended to be used hands-free. The downside is that a wider surface spreads the energy over a larger area—someone who wants pinpoint stimulation on a small area gets more of it with a standalone clitoral stimulator.

The distance between the shaft and the arm is fixed. That means the fit either works for your anatomy or it doesn’t, and it’s the single most important question to think about before buying a rabbit in the first place. We-Vibe has built Nova 2 around exactly this concern with a flexible and adjustable arm. Fun Factory hasn’t done that on Fusion.

Buttons, memory function, and travel lock

The interface consists of three buttons on the top of the handle: a plus button, a labeled FUN, and a minus button. According to the manufacturer’s manual, you turn the product on by holding the button down for half a second, step up with plus and down with minus, and turn it off with a click.

Two features in the manual deserve their own attention, because they rarely show up in the shop text. The first is the memory function: hold the button down until the product buzzes twice, and the current setting is saved for the next time; hold it until it buzzes five times to reset. It’s a genuinely useful detail on a product with two independent controls, because otherwise it takes time to get back to the same combination.

The second is the travel lock. Press plus and minus at the same time for about half a second to lock the buttons, and do the same thing again to unlock. In both cases, the buttons blink and the product buzzes briefly. On a 362 gram product that you pack in a suitcase, this is the difference between arriving with charge left and not.

Both functions come from the documentation for the earlier version and from the manufacturer’s own specifications table, where they’re listed as "Memory Funktion & Tastensperre". Fun Factory does not publish a corresponding list of functions for the current USB-C version, so expect them, but don’t rely on them as a selling argument.

48 or 64 combinations? The details don’t match

There’s a concrete contradiction in the supporting information that’s worth clarifying, because it affects how the product comes across in comparisons.

The manufacturer’s current product page states eight shock programs and six vibration settings. Eight times six is 48 combinations. The manufacturer’s previous specification table instead stated "64 Kombinationen aus Stoßbewegung (Pulsation), Vibration und Intensität", and the manufacturer’s own manual for the earlier version talks about ten pulsation steps. But the shop Joyland in turn writes that the product has 64 powerful combinations, while Vuxen and Blush Me write eight shock patterns and six vibration settings.

The conclusion is that the 64 number belongs to the earlier version and that the current one is stated as eight times six. The manufacturer wins over the shop, and the newer manufacturer information wins over the older one. That a shop still cites the old number is a sign that the product text hasn’t been updated when the model was replaced — not that there are two different items in stock.

Practically speaking, the difference matters less than it sounds. The pattern in this product category is that most end up with three or four settings. What really matters is that the two motors can be controlled independently, and that applies to both versions.

Sound level: no manufacturer states a decibel value

The question always comes up, and the answer must be honest: Fun Factory publishes no measured decibel value for Bi Stronic Fusion, either on the product page, in the specification table, or in the manual. They do not do so for Bi Stronic Arc, Bi Stronic Embrace, or Stronic G either. So there is no measurement to compare.

The closest thing is the patent text, which states that the design should produce oscillations with a relatively high amplitude at low frequency and essentially noiseless operation. It’s a design description, not a measurement, and it should be read as an intention. A site that lists an exact decibel value for this model therefore either presents its own measurement or a value without a source.

What you can, however, reason about is the character of the sound. A pulsator has a mechanical movement with stroke length, and such a movement produces a low-frequency, rhythmic sound rather than the high whine from an eccentric motor. Low-frequency sound travels through walls better than high sound, but it is perceived as less intrusive in the same room. A practical piece of advice that applies regardless of model: place the product on a soft surface, because a hard tabletop works like a resonance box.

Water resistance: what IPX7 actually means

Bi Stronic Fusion is rated IPX7. The rating comes from the international standard IEC 60529, which defines enclosure classes for electrical equipment. The number 7 in the second position means that the product is tested for submersion in water to a depth of one meter for 30 minutes. The manufacturer’s manual states the consequence plainly: the product is one hundred percent waterproof and should be washed before and after every use, including the first.

IPX7 vs “splash-proof” — the difference that matters

The difference versus a splash-proof product is greater than the wording suggests. Splash protection covers water droplets and, at best, water jets, but not submersion. Such a product handles a damp cloth and possibly a shower, but not a bathtub, and it shouldn’t be held under running water without thinking through the button controls and the charging contact.

With IPX7, the entire product can be rinsed off without being careful. On a pulsat or, it’s a greater advantage than on most other products, because the design has a moving part inside and therefore a seam where the housing meets the shaft — that seam must be sealed for the rating to apply, and the fact that the manufacturer states IPX7 means that it is. If a product is missing an IPX rating entirely, it should be treated as not waterproof. The absence of an IPX rating is never a sign that the product would be approved.

An important limitation is stated in the manual and applies despite IPX7: the charging cable must never come into contact with water or moisture, and the product may not be used while it is charging. The rating applies to the product, not the cable.

Cleaning, lubricant, and storage

Rinse the product in lukewarm water after every use and use fragrance-free soap or a cleaning agent intended for intimate products — that’s the manufacturer’s own instruction. Wipe it off and let it air-dry before putting the product away.

The lubricant question is the one where the manual is strictest, and the list is longer than for most other products. Do not use silicone-based lubricant, oils, or lotions — this includes sun oil and sun protection cream, lip balm products, essential oils, coconut oil, and all kinds of cooking oils. The manufacturer explicitly states that such products can cause irreversible damage that the warranty does not cover. Silicone-based lubricant breaks down the silicone surface over time and makes it porous, and a porous surface can no longer be cleaned properly — it only can be replaced. Use water-based lubricant, and expect to need more of it than usual if the product is used anally.

The manual also covers temperature limits that rarely appear in store descriptions: the storage and operating temperature is stated as 0–40 °C, and the maximum ambient temperature during operation is 40 °C. Boiling water and a dishwasher are therefore ruled out despite IPX7. The manufacturer also mentions that fluctuating ambient temperature—for example during travel—can cause slight condensation inside the product, and recommends letting it adapt for a few hours before using it.

Battery and charging: USB-C is the big improvement

The current version charges via USB-C. It is the most concrete improvement over the previous version, which required Fun Factory’s own magnetic charging cable—a product-specific cable that couldn’t be replaced with something you already had at home.

How is Fun Factory Bi Stronic Fusion charged?

With a regular USB-C cable. The stores that sell the item consistently point out that chargers are not included, and justify it by saying that all Fun Factory products now have USB-C, which means you can use any standard USB-C cable you already have. It’s honestly phrased, but it also means that the delivery is more frugal than it used to be: the old version was delivered, according to the manufacturer’s own information, with a toy, a charging cable without a USB adapter, and a booklet with instructions for use and play ideas.

Fun Factory publishes no included-items list for the current version, and the information above about what’s included is therefore a store claim, not a manufacturer claim. Check the store’s own product text before ordering if you don’t have a USB-C cable at home.

A couple of instructions from the manual that are hard to find anywhere else: the product must not be used while it is charging, and it should not be stored while discharged. The manufacturer states that the battery’s standby time is about six months, after which it needs to be charged so the cell stays healthy. The battery has a protective circuit that prevents overcharging and total discharge.

The capacity that isn’t published for the new version

Here the basis is clearly divided. For the previous version, the manufacturer’s manual states the battery capacity as 780 mAh, average operating time as 40–120 minutes, operating time up to two hours, and charging time of about eight hours. The manufacturer’s specification table for the same version instead stated 16 hours for the first charge—an inconsistency by a factor of two within the manufacturer’s own material, which is worth knowing before being surprised the first evening.

For the current USB-C version, Fun Factory publishes neither capacity, operating time, nor charging time. It is a real gap, and it becomes clear in comparison: We-Vibe states up to 120 minutes of operating time and up to 90 minutes of charging time for Nova 2. Without the capacity, it’s not possible to convert the operating time into power consumption, and it’s not possible to compare how heavily the cell is loaded between models.

What generally applies to lithium-ion batteries also applies here: the capacity decreases with the number of charge cycles, and the cell is not replaceable. On a pulser, the load is also higher than on a vibrator, because something has to be accelerated in two directions instead of a small weight just spinning. With use a couple of times per week, it’s the battery—not the silicone—that sets the limit for lifespan.

Bi Stronic Fusion compared with the alternatives

Three comparisons are relevant: against the model it replaced within the brand, against the best-selling rabbit vibrator without a stimulation function, and against a pure pulser without a clitoral arm. All the information below comes from the respective manufacturer’s own specifications, and all the prices come from the shops’ product feeds on 29 July 2026.

Against Fun Factory Bi Stronic Arc — the successor is cheaper

Bi Stronic Arc costs from 499 SEK, meaning it’s 100 SEK less than Fusion at its cheapest. It’s unusual for the successor to be cheaper, but the explanation is simple: Arc is sold in higher volumes because it’s the model the manufacturer is still marketing.

Technically, they’re very close to each other. Both are listed with eight stimulation programs and six vibration programs, both are IPX7, and both are charged via USB-C. Arc measures 223 millimeters and 79 millimeters in width and weighs 336 grams, versus Fusion’s 220 millimeters, Ø 40 millimeters, and 362 grams. In addition, Arc has an ergonomic LOOP grip with a ridged structure and a published material breakdown: silicone, ABS plastic, and polycarbonate.

The conclusion is uncomfortable but clear: Arc is the better deal on paper. It’s cheaper, it has a grip that makes it easier to control by hand, and the manufacturer publishes more about it because it’s in the lineup. What Fusion still has is a slimmer profile and a clitoral arm that covers wider—and a price that will likely continue to fall as the stock runs out. If you choose based on specification depth, choose Arc. If you choose based on shape and fit, Fusion can still be the right choice.

Against We-Vibe Nova 2 — 550 SEK and a completely different idea

We-Vibe Nova 2 costs from 1,149 SEK, meaning it’s almost twice as much as Fusion at its cheapest. They are both rabbit designs, but they solve the problem in opposite ways.

Nova 2 measures 217 × 85 × 39 millimeter and stimulates with vibration in both parts. We-Vibe states body-friendly silicone made without phthalates, BPA, and latex, a runtime of up to 120 minutes, a charging time of up to 90 minutes, IPX7, and a two-year warranty — as well as app control, which means settings can be changed remotely. The clitoris arm is also flexible and adjustable, explicitly designed to maintain contact with the clitoris regardless of movement.

The differences that actually matter: Fusion pulses, Nova 2 vibrates. Nova 2 has a published runtime, a published charging time, a published phthalate declaration, a published warranty period, and an adjustable arm. Fusion has a movement that Nova 2 can’t do at all, and it costs 550 SEK less. Do you want data and adjustability? Nova 2 wins. Do you want thrust movement hands-free? There’s no competition — Nova 2 doesn’t do that.

Against Fun Factory Stronic G — a pulsator without a clitoris arm

Stronic G is the pure pulsator in the lineup: the manufacturer lists 209 × 49 × 37 millimeter, 295 grams, silicone and ABS plastic material, IPX7, and ten pulse programs — but no vibrating clitoris arm at all. In Sweden, it’s the Stronic G Forte variant that’s sold, from 699 SEK at a store that has it in stock.

The comparison is really a question of whether you want the second motor or not. Stronic G is shorter, 67 grams lighter, and has more pulse programs (ten vs eight). Fusion has a second motor in a wing-shaped arm that stimulates the clitoris in parallel. For anyone who already knows that external stimulation is needed to reach orgasm, it’s not an option but a requirement — and then Fusion is the right product. For anyone who stimulates externally in another way, Stronic G is a simpler, lighter, and slimmer product with the same basic technology.

Price range: 599 to 795 SEK and four stores with stock

Five Swedish stores sell the item with EAN 4255821800063. Cheapest is Vuxen at 599 SEK; most expensive are Blush Me and SexleksakerOutlet at 795 SEK each. That’s 196 SEK, or a 33 percent difference, for the exact same item number, the same color, and the same packaging.

The stock situation is unusually good for this product. Four of the five stores had it in stock during the price check: Vuxen at 599 SEK, Joyland at 676 SEK, and Blush Me and SexleksakerOutlet at 795 SEK each. Sexonic listed 680 SEK but didn’t have it at home, and stores that list a product as sold out may keep an old price in the feed.

Two of the stores also show a higher regular price in their feeds—799 SEK at Vuxen and 795 SEK at Joyland—which means that the two lowest prices are promotional prices rather than fixed pricing. That fits well with the picture of a model being phased out by the manufacturer: the inventory needs to go, and that’s exactly the situation where price comparisons pay off the most. The manufacturer’s own list price was 79.95 euro when the model was still being sold in Fun Factory’s own web shop.

The prices in the table above are updated when the stores’ product feeds are updated, but always check the final price at checkout. Shipping costs are added by several stores below a certain order value, and in this price range, most are under the threshold for free shipping—which can eat up a large part of the 77 SEK difference between the two cheapest.

Who is Bi Stronic Fusion suitable for—and who is it not suitable for?

It’s a fit for you if you specifically want a thrusting motion and not just vibration, and if you want to be able to use the product without having to hold it. It’s a fit for you if you want external stimulation without needing a second product, and if you want two motors that can be adjusted independently of each other. Charging via standard USB-C and being rated IPX7 make it easy to live with in everyday life, and the price of 599 SEK is low for this kind of mechanics.

It doesn’t fit you if you want the smallest possible product—220 millimeters and 362 grams are in the upper part of the category. It doesn’t fit you if you want something with a grip to control it with, where Bi Stronic Arc with its LOOP grip is clearly the better model. It doesn’t fit you if you require published runtime, charging time, and battery capacity before buying, because Fun Factory does not publish either of these for the current version. And it doesn’t fit you if you need an adjustable clitoral arm, because the distance between the shaft and the arm is fixed.

One more thing belongs in the decision. The model has been phased out of the manufacturer’s catalog. That makes it cheap right now, but it also means that documentation, spare parts, and the manufacturer’s own support become harder to get hold of over time. Anyone who wants a product that will still be in the range in three years is better off looking at Bi Stronic Arc or Bi Stronic Embrace.

Safety: pacemaker, magnets, and anal use

Three points in the manufacturer’s materials deserve to be lifted from the fine print, because they are not stated in any Swedish store text.

Pacemaker. The manufacturer explicitly states that the product is not recommended for people with a pacemaker, and the archived product page carries the label "nicht geeignet für Träger von Herzschrittmachern". The reason is the magnetic fields in the drive mechanism. The manual refers to doctors for more information, and that’s the right way to go.

Magnets and cards. The manual warns that cards with a magnetic stripe, for example payment cards, can be damaged by contact with the product’s magnetic parts. Do not store it in the same compartment as your wallet.

Anal use. The manufacturer explicitly labels the product as anus-safe and writes in the manual "Butt safe! Play away!". According to the manufacturer, the wing-shaped arm functions as a brace. It is an unusually clear commitment in this category—most rabbit designs are explicitly not constructed for anal use—but it assumes plenty of water-based lubricant.

The manufacturer also points out what applies to all products of this type: it is not intended for children and is not a medical device. The product should not be opened, exposed to direct sunlight, or used or charged if it becomes unusually hot or shows signs of discoloration or deformation.

Warranty, complaints, and right of withdrawal

The warranty issue is where the underlying basis is weakest, and it needs to be said plainly. Fun Factory’s own German web shop does not publish any warranty period for this product. The terms refer in section 10.2 to the fact that information about any additional warranties and their exact terms is available with the respective product—but the product page for the Bi Stronic Fusion never stated any period, only the marketing phrase "FUN-Garantie".

On Fun Factory’s official Australian brand site, instead 25 års garanti is listed for this exact model. It’s an exceptionally long time for a product with two motors and a fixed-mounted lithium-ion battery, and the manufacturer publishes no terms that explain what it covers. Treat it as a marketing claim until the terms are available in writing, and don’t count on it when you compare.

The manual, however, clearly states an exception that applies regardless of the warranty period: damage caused by silicone-based lubricants, oils, or lotions is not covered. That’s the most common reason why a silicone product breaks prematurely, and it is entirely the user’s own responsibility.

What always applies instead are your statutory rights, and in practice they’re more important here than the manufacturer’s promise. Under the Swedish Sale of Goods Act (konsumentköplagen), you have three years to complain for defects in the goods, regardless of what the manufacturer promises. In distance selling, you also have a right of withdrawal for fourteen days under the Act on distance contracts and contracts outside business premises (lagen om distansavtal och avtal utanför affärslokaler). Be aware that in practice the right of withdrawal is limited for hygiene products that have been taken out of a sealed package—however, the right to complain about defects always applies. If you have questions about what applies in your case, Konsumentverket (the Swedish Consumer Agency) can guide you via Hallå konsument.

One last practical detail that belongs here: the manufacturer states the WEEE registration number DE66139642 for the product. This means it is to be taken to electronic recycling when it is used up, not thrown in household waste — the battery is permanently fixed and cannot be separated at home. The cardboard packaging, on the other hand, goes into paper recycling, which the manufacturer explicitly points out in the manual.