Mini USB2.0 Speaker
*Power output: 3W*2RMS
*Speaker: 4Ω 3W
*USB power supply
*input sensitivity: 400mV
*Distortion: ≤0.2 %( 1W 1KHZ)
*Frequency response: 80Hz-20KHZ
*Separation:≥78dB
*S/N Ratio: ≥80dB
*3.5mm audio output jack
*Power Voltage: USB/DC 5V
*Optional external power supply (DC5V-1.2A)