- 2.0 speakers for computers and notebooks ,- Power supply via USB port ,- Backlit volume control for individual, continuous volume control - Connection: 3.5 mm Jack Plug/USB 3.0 A Plug ,- Audio system: 2.0 ,- Distortion (max.): 1.5 % ,- Speaker W x D x H: 7.8 x 7,5 x 17,8 cm ,- Weight: 560 g ,- Power Supply: USB 3.0 A Connection ,- Frequency Range Speaker: 50 - 20000 Hz ,- Impedance: 4 Ω ,- Peak power: 6 W ,- Sine-Wave Power Output (Speaker): 1.6 W ,- Voltage: 5 V ,- Colour: Black/Silver ,- Recommended Use: PC 2 years legal warranty only