1. mini computer speaker 2. 3w *2 speaker 3. have real sound 4. USB power supply 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) hot sale mini USB speaker
