Karaoke microphone Wireless echo import

ammoon dual channel VHF wireless handheld microphone system, 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. Specifications: --Receiver Carrier Frequency: VHF210-280MHz Sensitivity: 25KHz S/N: gt;60dB Bandwidth: 15MHz T.H.D.： lt;1.1％@1K Integrated Frequency Response: 50Hz~18KHz±3dB Effective Working Distance: 40 Meters Plug: US Voltage: 100-240V --Microphone Power Supply: 2 * AA Battery for One Mic Mic Size: 16 * 5 * 5cm / 6.3 * 2 * 2in Package List: 2 * Mic 1 * Receiver 1 * Adapter 1 * Audio Cable 1 * User #39;s Manual