Feature:<br />-Operating Voltage: DC 5V<br />-Battery capacity: 1000 mA<br />-Playing time: 3 hours<br />-hine dimensions: length 150 * W 55 * H 55mm<br />-Output Power: 3W * 2<br />-External magnetic speaker: 4┯ 3W<br />-Reaponsing Freauency:150-18000HZ<