Product Detail Sturdy metal housing (transmitter and receiver 42MHz bandwidth: 1680 tunable UHF frequencies for interference-free reception Enhanced frequency bank system with up to 16 compatible frequencies Ethernet port for connecting to the Wireless Systems Manager (WSM) software for control via computer and mdashthis Adaptive diversity for high reception quality . The "Sennheiser ew 300 IEM G3 In-Ear Wireless Monitor System, CH G" is best product for you. We recommended Sennheiser ew 300 IEM G3 In-Ear Wireless Monitor System, CH G