Nady DKW-8U GT Wireless Guitar System CH 1 BT-8U" Bodypack Transmitter: OFF/STANDBY/ON switch allows convenient audio muting Status LED indicator flashes once for unit; lights steady for low battery alert Locking 3.5mm mini-jack provides secure connection for removable microphone or instrument cable Single 9V alkaline or NiMH battery operation The Nady DKW-8 GT wireless system represents an unprecedented value in a single-channel UHF instrument system with interference-free operation in any application or locale on select UHF frequencies from 794-805 Mhz Compact, simple set up to operate  simply plug in instead of your instrument cable All the advantages and freedom of wireless operation without cumbersome cords The DKW-8U GT features Nady's proprietary companding circuitry for an industry best 120dB dynamic range, and the clearest, most natural sound available with 150+ feet typical operating range  up to 300+ feet line-of-sight