Comfortable and quiet- allowing you to go about your day and enjoy super-strong vibrations that target the perineum. Your biggest challenge will be controlling your reactions! 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 - 2.5 - 3 hours of continuous use. Dimensions: Length - 5.24 inches. Width of perineum stimulator section 1.3 inches. - 3.59 inches. Width of cock ring - 2.55 inches Inside diameter of cock ring - 1.75 inches.