Wireless home theater speaker 1.Hi-fi,HDCD Sound Quality ... 4.CE,FCC approved 2.4G wireless speaker for wireless home theater system A. Features: 1. Adopt 2.4GHz ... sound effect Distortion Less than 0.1% at 1W Audio Dynamic range 90dB Modulation GFSK Support power output 40W ... and DVD player. Teach on classroom. Computer and other audio room.Home theatre, portable audio player, Karaoke player, etc.