USB Powered 3.5mm Audio Laptop Speaker Clip-On Soundbar - Portable Compact Travel Stereo Speaker Bar Design Uses USB for Power 3.5mm Jack for Audio Rated power: 2 x 2.5W Frequency response headset: 150Hz - 20, 000Hz Easy cable management Plugs: USB (for power) 3.5mm jack, Stereo Cable length: 48"