Dual Channel VHF - Wireless Handheld Microphone System with Echo Function

features VHF 210-280MHz, with Echo function, high signal/noise ratio performance offers stable signal transmit and clear sound quality.
Features:
VHF 210-280MHz band microphone system to avert frequency interface.
High signal/noise ratio performance, stable signal transmit and clear sound quality.
Dual frequency design, independent volume adjust knob for channel A and channel B.
With Echo function for better performance.
The effective working range up to 40 meters in the open area.