the t.bone IEM 100, frequency range: 863-865MHz UHF Wireless In-Ear System - 9.5" stereo transmitter (IEM 100 ST), bodypack receiver (IEM 100 R) and T.Bone EP3 earphones, switchable frequencies, up to 4 parallel systems, display, mono/stereo switchable, 2x combi inputs (adjustable on receiver), headphones output, powered via 2x AA batteries, removable BNC antennas, includes rackmount, antenna mount and plastic case. No licence needed, free to use all over Europe.