Color: White - ABS housing material - Compact light-weight & portable - Powered by 2 x AAA battery (not included) - Connect the attached USB cable to the computer - Turn power switch to ON position - The power indication lamp lights up. The device goes into running state - Suitable for computer / MP3 / Iphone / iPod / Ipad and all audio equipment with 3.5mm jack - Rated power: 2W - Impedance: 86?3dB - Working voltage: 3~5V - Frequency range: 260Hz~10000Hz - 3.5mm jack cable length: 45cm - Accessories: - 1 x USB cable (80cm) - 1 x English / Chinese manual