2.1Channel Speaker 1.RMS: 30W+10W*2 2. USB/SD,FM function ... button with remote LED Display USB/ SD,FM 2.1Channel Speaker system Features:1, Used for computer,DVD,TV and all ... movies.Specification:1. Output power:30W+10W*2(RMS)2. Speaker driver:woofer5.25inch,satellite3inch*23. Frequancy response:40HZ-20KHZ4. S ... ,1462sets/40'HQ LED Display USB/ SD,FM 2.1Channel Speaker system