Lelo Masturbator F1 S Prototype
The Lelo F1S combines conventional vibrations with sonic waves. Instead of standard vibrations, one of the motors emits powerful sonic waves that permeate deep into your penis, giving you stimulation from all directions all at once. The Cruise Control setting ensures F1S never has a drop in power during vigorous use. F1S is controlled by an App and is 100% waterproof and rechargeable.