Adesso Bluetooth 3.0 Waterproof Speaker - Retail Packaging - Blue Bluetooth 3.0 Wireless Technology Offers up to 30' feet of Wireless freedom, plus the benefits of lower battery consumption, faster pairing and higher security encryption. With its water-proof silicone material you don't have to worry about damaging your Speaker. You could spill a beverage on it and all you have to do is clean it off. Ranked at IPX-6 Waterproof Standard, this device can withstand heavy splashing and rain. Built-in Rechargeable Battery Xtream S1's built-in rechargeable battery can be charged by connecting the included Micro USB cable to the bottom of the device, bringing 7 hours of continuous music time and up to 800 hours of stand-by time. Detachable Suction The suction cup allows the audio device to stick to smooth surfaces such as wall tiles and glass or metal. The suction cup is also detachable if preferred. Built-in Microphone Omni-directional Microphone allows you to make hands-free phone calls.