The technique support:

                  Msn: htx8888x(at)hotmail com

                         Skype: huatengxing

Output power: 5W RMS

Sound box: 2 x 2.5 w

Loudspeaker unit: 2x2

Separation degree: >45dBA

Believe a Zao ratio: 70dbA

Power Supply: DC5V-0.5A

The frequency respond to : 100Hz-20KHz