Portable speaker Portable speaker1.Chip: MVSILICON 6850CA2.Output: RMS 3W THD = 10% 3.Input: DC 5V 1A 4.Frequency response: 150-18 000HZ(±3dB)5.Signal Noise Ration: bigger or equal to70dB6.Speaker: outside diameter 45mm, anti magnetic 4 ohm7.Line In/Out Jack: Audio input out jack8.Decode TF card, Flash disk, Mp3 decoding function9.Built-in dual IC protective plate and 800mA Li-Battery.10.Support ...