Antec Mobile Products Sugar Cube Portable Speaker (White) Wireless Blue Tooth Experience your tunes in high definition and surprising fullness realized through a 4W / 2in driver and bass port - outclassing other similar-sized portable speakers. 6 to 8-hour playtime powered by a built-in rechargeable Li-ion battery. Automatically connect to the last-connected device when turned on enables one-step music streaming. Compatible with all Bluetooth-enabled devices (2.1 and over) Outstanding connection range of up to 33 feet. Built-in microphone with a 2-feet pickup range allows the speaker to double as a speaker phone. Package contents: AMP Sugar Cube Portable Bluetooth Speaker and micro USB cable. 12-month warranty and free lifetime technical support.