LELO F1s Developer's Kit RED Masturbator

Science has never been this satisfying! Using powerfully intense dual motors, the F1s combines conventional vibrations with powerful sonic waves to deeply thrill your penis from all directions at once.

Rather than simply satisfying the nerve endings at your skin's surface, LELO’s revolutionary SenSonic technology uses sonic waves for deeper stimulation. The Cruise Control setting ensures the intensity remains constant while you play.  

The F1s uses 10 performance sensors to report your stats back to you via the LELO F1S App. If you have experience with coding and app development, you can, with the freely available Software Development Kit, continue to experiment, track your sessions and shape the future of your pleasure.

The internal sleeve is made of super soft, skin-like silicone with grooves that heighten sensation during use. It is fully waterproof and easy to clean using warm water and mild soap, or an antibacterial spray for good hygiene.

Apply a generous amount of lube to F1s’ internal canal. Press the center button to switch on your masturbator and slowly insert yourself. F1s will begin working when it senses you’re inside. Watch yourself through the window panel as you race towards the finish.