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! Compatible With: iPhone/iPad Air/iPad Mini/iPod Touch iOS 10.0 and later. Android 4.3 and later (with Bluetooth 4.0 enabled) Mac (with Bluetooth 4.0 enabled) Windows PC (needs a Lovense USB Bluetooth Adapter to connect). IPX7 Waterproof. USB rechargeable - 1.5 - 2 hours of continuous use.