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1.Input voltage: DC5.0V/500MA 2.Output: 4W 3.Frequency response:20HZ-20KHZ 4.Impedance:4R 5.Speaker size: 40mm*2 6. Signal to Noise Ratio:>75db 7.Material: environment-protection ABS 8.Powered via USB cable or 6V adapter Packing Details: Color :As
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