JBL Charge Portable Wireless Bluetooth Speaker -- Unsurpassed portable audio performance from your mobile devices & tablets. 12+ hours of playback time from built-in, high-capacity, 6000mAh Li-ion rechargeable battery, charges your other mobile devices on the go, built-in USB port. Two 1-5/8-inch (41mm) full-range drivers & built-in bass port, full-range JBL sound, exceptional bass. Wirelessly streams audio from any Bluetooth-equipped device. So Vote Below! Good idea - or a waste of money?