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By certification 
1.2channel Wireless Dynamic Microphone, wide UHF 600-900MHz frequency, 200 selectable channels.
2.Flexible, simple and convenient to operate.
3.Advanced digital PPL to ensure the unit in high stability and wide frequency response.
4.Dual sound effect compress and expand function offer higher S/N ratio and larger dynamic range
5.Multiple squelch control circuit helps to get rid of the external interference
6.Unique design, powerful dynamic and wide frequency response.
