USB Powered so you only need to plug in the built-in USB power cable and AUX headphone jack into your PC for a streamlined Plug-n-Play audio solution, without the need to take up an AC outlet. 2" Drivers with dual passive bass woofers and rich stereo 7W RMS speaker output (3.5W per speaker) for unexpected oomph and a powerful upgrade over your computer's built-in speakers. Compact low profile design ideal for small desks or office workstations with limited desktop space, while the cable connecting both speakers conveniently affords 3 feet of separation from each other.