Sennheiser ew 500 G4-KK205 BW Band, UHF Wireless System with SKM 500 G4 Handheld Transmitter, NEUMANN KK 205 condenser capsule (supercardioid) and EM 300-500 G4 9.5"" receiver, 88 MHz bandwidth, 20 Frequency banks with up to 32 presets for each, Up to 32 compatible channels, Network connection for frequency management and control via software WSM (Wireless System Manager), Frequency response 25 - 18,000 Hz, Frequency transmission via infrared interface, Handheld transmitter with charging contacts for optional battery BA 2015 (NiMH), Pilot tone, Autotune to find free frequencies, Integrated EQ, Audio gain over 60 dB range, Soundcheck mode, 4-Level battery indicator on transmitter and receiver, HDX Compander, Frequency range: BW Band (626 - 698 MHz), LCD with AF level and channel display, Switchable transmission power 10/30/50mW, 2 BNC antenna connectors, XLR male balanced and jack unbalanced, Power supply 10.5 - 16 V DC, Includes GA 3 rack mount, microphone holder, NT2 power adapter and 2 AA batteries