Black M-520 Ultra-Portable Wireless Bluetooth Speaker - 20 Hour Rechargeable Battery Life, Powerful Sound, Compatible with all Bluetooth Devices - GoAdvanz a High Quality Clear, Full-Range Audio. Louder Volume, room-filling sound, perfect for indoors and outdoors 20 hours playtime at mid-level volume powered by a built-in high-capacity rechargeable battery. Outstanding Bluetooth Wireless Connection Range of up to 30 feet. Automatically Reconnect your device anytime. Compatible with all Bluetooth enabled smartphones, tablets, laptops PCs including iPhone, iPad, iPod or android mobile devices. 3.5mm audio port for non-Bluetooth devices. Ultra-Portable, Light-weight and Easy to Carry, so you can take sound anywhere. Cover it in Style while Protecting it with our Customizable Skins available in Black, Green, Red, Hot Pink, and Midnight Blue.