Sanwa Supply USB Speakers MM-SPU7BK, Wooden Cabinet with Passive Radiator, USB Powered PC Speakers, Black

---------------------------------------------------------------------- [Maximum practical output]: 5W (2.5W+2.5W) [Frequency characteristics]: 130Hz~20KHz [Speaker type]: Sealed full-range speaker system [Speaker size]: 2 inches (diameter approx. 52 mm) [Impedance]: 4Ω [Input terminal]: USB A connector male (compatible with both USB 2.0 and 1.1 standards) [Power supply]: Supplied from USB port (DC5V 500mA) [Housing material]: Wooden [External dimensions]: W67 x D68 x H115mm [Cable length]: Speaker cable approx. 1.3m, PC connection USB cable approx. 1.3m By sending high-quality sound data from your computer to the speakers as digital, and converting it to analog within the speakers with less noise, you can reproduce clear, high-quality sound sources.