... 100V~250V AC 8-socket universal power bar - Hidden Quadband GSM cell phone network based audio transmitter - Supports 800, 900, ... 1800, and 1900Mhz GSM networks - GSM bug features 500mAh rechargeable lithium battery so that it continues ... up sounds and voices from within 5 meters radius - GSM bug works completely disguised without producing any sound, beep, ...