Sennheiser EW 500-945 G3 - Wireless Vocal System with Dynamic Supercardioid Handheld Mic - G-Range (566 - 608 MHz) SKM500 G3 handheld transmitter with e945 super cardioid dynamic capsule and EM500 G3 rack-mountable diversity receiver with GA3 rack mount kit. 42 MHz bandwidth: 1680 tunable UHF frequencies for interference-free reception Enhanced frequency bank system with up to 32 compatible frequencies Ethernet port for connecting to the Wireless Systems Manager (WSM) software for control via computer - this delivers a good overview of monitoring and professional data management for multi-channel systems Sturdy metal housing with illuminated graphic display