USB powerd speakers, compatiable with all computers which with a USB port and a earphone Jack Output RMS 3W*2(6W), stereo sound big and clean with some bass, good for work, music, movies, games, etc Compact design, save your desktop space a lot Plug and play, easy operation, volume adjustable both by the speaker controller or the computer Within 24 hours reply, 2 years money back warranty, we'll be at your services no matter how long you had purchased this speaker