... *4.5CMTechnical Details: Supply Voltage:3V(3-4.5V,2*AA)Output power:2W(1KHZ,THD10%)Frequency Response:150-20000HZSignal&noise ... ,MP4,PC,IPOD and other audio devices. Power Source: 2 AA Battery Accessories:1)USB Power Supply Cable 2)3.5mm ... -20KHz Output Power: 3W Power supply: DC 3.0V (2 * AA batteries) Battery life:> = 7 hours Audio length: 250mm Plug: 3.5 ...