Ambi, the most versatile bullet vibrator - EVER. Broad, pinpoint or super pinpoint stimulation. Ambi's unique curves complement yours! In most positions, it is incredibly hard to keep a bullet vibrator in the right spot. You have to twist your hand and the movement makes that difficult. Ambi's curves complement yours and help you keep the vibrator in the right spot. Never miss the big O again! USB rechargeable - 1.5 - 2 hours continuous use. Using the Smartphone app for Android or Apple : control toy close range, long distance. Unlimited Vibration Patterns . Sync to Music, sound activated vibrations, set vibration levels. Waterproof submersible. One Year Warranty.