| 1.Input voltage: DC5.0V/or AAA*3
2.Output: 4W
3.Frequency response:20HZ-20KHZ
4.Impedance:4R
5.Speaker size: 36mm
6. Signal to Noise Ratio:>75db
7.Material: environment-protection ABS
8.Powered via USB cable or 6V adapter
9)Product Patent No:200830046343.7
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