Sex tech has come a long way from simple strokers and vibrating sleeves. Brands like LELO are pushing the boundaries with toys that mix pleasure, science, and even AI. Their F-series—F1S V2, F1S V3, and the new F2S, aren’t just about stimulation, but also about tracking, training, and creating fully interactive experiences. Over the past year, I’ve spent time with all three models, and I’m sharing what stood out to me in terms of design, functionality, and sheer pleasure.
F1S V2 Review – The Pioneer
When I first tried the F1S V2, I was intrigued by the idea of combining pleasure with performance tracking. The SonicWave stimulation feels unique—it surrounds the penis and delivers a strong, pulsing sensation without any thrusting on your part.
Both the F1S V2 and V3 have a similar form factor, but the V2’s fit wasn’t perfect for me. I owned the F1S V2 for the longest period of time, but I stopped using it faster than the V3 because the toy’s dimensions weren’t comfortable, and the vacuum/suction sound was louder. The silicone felt very thin, and the internal width made longer sessions a little uncomfortable. Still, the app integration and sensor feedback gave me an interesting glimpse into my own technique and stamina. For a first-gen device, it’s impressive, but I found myself reaching for the V3 more often.
F1SV2 Toy score sheet
F1S V3 Review – The Upgrade
When I first tried the F1S V2, I was intrigued by the idea of combining pleasure with performance tracking. The SonicWave stimulation feels unique—it surrounds the penis and delivers a strong, pulsing sensation without any thrusting on your part.
Both the F1S V2 and V3 have a similar form factor, but the V2’s fit wasn’t perfect for me. I owned the F1S V2 for the longest period of time, but I stopped using it faster than the V3 because the toy’s dimensions weren’t comfortable, and the vacuum/suction sound was louder. The silicone felt very thin, and the internal width made longer sessions a little uncomfortable. Still, the app integration and sensor feedback gave me an interesting glimpse into my own technique and stamina. For a first-gen device, it’s impressive, but I found myself reaching for the V3 more often.
F1SV3 Toy score sheet
F2S Review – The Newcomer
The F2S breaks away from the sealed design of the F1S series and introduces an open-ended form factor. This might sound like a small change, but it completely transforms the experience. Instead of focusing on suction and penetration-like pressure, the F2S feels more like a stroker enhanced with vibrations. Because the end is open, airflow is better, and the annoying vacuum noise from the older F1S models disappears almost entirely.
The toy is lighter and less bulky, which makes it easier to use for longer sessions. Applying lube, inserting, and cleaning are all simpler, which honestly makes a big difference when deciding whether you want to reach for a toy often or leave it in the drawer. The fit is a little snug, which I personally enjoyed, though it could be tight for those with more girth.
Functionally, the F2S shifts its focus. Instead of simulating penetration, it emphasizes versatility. The app doesn’t just let you customize vibrations—it also includes Kegel and stamina training modes, making it a toy that blends pleasure with performance improvement. For me, it felt practical, efficient, and less intimidating to use, even if it lacked some of the enveloping fullness of the F1S series.
F2S Toy score sheet
Design & Feel Comparison
F1S V2 is compact, slightly tight, thin silicone, noticeable suction noise. F1S V3 comfy, ribbed texture, thicker silicone, Cruise Control adds rumble, minor suction sound. F2S open-ended, tight but manageable, light, quiet, easy to use for longer sessions.
Strokers and App Experience
LELO’s app adds real value to each toy. I found customizing vibrations straightforward, and I really enjoyed the gamified Kegel and stamina training routines in the F2S. The Bridge works too, though I didn’t fully test all its features.
Bottom Line
After spending months with these toys, here’s how I’d sum them up:
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F1S V2: A solid introduction to tech-forward stroking, but comfort and sound are limiting factors.
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F1S V3: The best balance of comfort, stimulation, and interactivity—my personal favorite for immersive sessions.
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F2S: Practical, quiet, and perfect for stamina training or longer, more controlled sessions.
No matter which you choose, each offers something unique. If you want a high-tech stroker, the F1S line is the way to go. If you want practicality, ease of use, and stamina-focused training, the F2S is a game-changer.
Disclosure: We are a review site that receives compensation from Amazon for products sold through this site. We test each product thoroughly and give high marks to only the very best. Opinions expressed here are our own.
F1SV2
Masturbator
- Strong, unique SonicWave stimulation that surrounds the penis
- Gives a penetration-like sensation
- Includes app integration and sensor feedback to track technique and stamina
- Silicone sleeve feels thin and less comfortable
- Internal width can make longer sessions uncomfortable
- Louder vacuum/suction sound, especially when stroking
- Closed design makes cleaning a bit more effort
F1SV3
Masturbator
- You can choose the toy size (regular or XL) based on your anatomy
- Newer silicone feels great on the skin
- Can be used with an app
- Feels more powerful than the V2
- Premium look and feel
- Vacuum/suction sound is still present when stroking
- Cleaning the toy can be a bit complicated
- Louder vacuum/suction sound, especially when stroking
