Supersonic Sc-1399 Bluetooth Speaker System * Wireless Bluetooth Portable Speaker * Rich Quality Sound * Connect & Stream Music from Any Bluetooth Enabled Device Such as a Tablet, Smartphone, Notebook, Computer & More * Built-in USB/SD inputs * 3.5mm Auxiliary Input for Most Wired External Audio Devices * PLL FM Stereo Radio * LCD Display * Bluetooth LED Indicator * Electronics Volume Control * AC/DC Operated * Bluetooth Operating Range Up to 32ft. * Total Output: 6W * Output Power: 3W x 2 * Frequency Response: 80Hz-16KHz * S/N Ratio:  55db * Battery: 4 x "C" Type * AC/DC Adapters & User's Manual Included