High quality sound and bass output
Powered by USB Port, no cumbersome power cords or batteries!
Plug and Play Installation with USB 2.0 Port

Techinical Specifications:
External Power: DC 6V, 250mah
Speaker Impedance: 8Ω
Output Power: 0.5W x 2
Total Harmonic Distortion: ≤0.5%
Frequency Response: 50HZ-20KHZ
Signal/Noise: ≥55DB
Package weight: 500g

USB Active YAMAHA Style sound box, through the USB interface power supply, when the power supply achieve, you can use on computer and MP3 player.