Output: RMS6W (3W + 3W) THD = 10%

Frequency response: 150 to 18,000Hz

Signal and noise radio of power amplifier: >80dB

Loud speaker:1.77-inch (external diameter 45mm) magnetic resistant 4Ω

Line in: configure 3.5mm stereo's plugs

Power supply: 5V/100mA 

AC power adapter, USB power rotate connect line (available)