the t.bone IEM 200 - 820 MHz, UHF Stereo In-Ear Wireless System with total 961 frequencies, up to 8 Systems parallel, Stereo- Mix/Mono Mode, switchable Limiter, 9,5" transmitter with internal Monitoring-Function, 6,3mm and 3,5mm Stereo Jack out, adjustable volume, switchable -10dB Pad, frequency- Channel- Group- Input Level- and Mode in LED Display, 2x XLR/Jack Combi Input, 2x Jack Loop out, internal powersupply, BNC antenna connector, IEM 200 R pocket receiver with with 3,5mm headphones-connector, Volume Leveler, Balance Control, LED Display, Belt clip, works with 2x AA battery or rechargeable batteries, removeable batterytray, incl. EP 4 InEar phones, Silicon earpads, rackmount, frequencyrange 820 - 844 MHz