the t.bone IEM 100 - 863 Mhz B-Stock UHF Wireless InEar-System containing 9,5" Stereo Transmitter IEM 100 ST, Bodypack-Receiver IEM 100 R and earphones, 16 frequencies switchable, up to 4 systems parallel, frequencyrange 863 - 865 MHz, internal Limiter to +12 dB, Display with battery RF and AF on receiver, Mono-Stereo switchable, 2x Combi-Input adjustable on receiver, headphones out, works with 2x AA battery, removeable BNC antennas, incl. Rackmount and plastic case