Vinnfier WM1100 DUO UC Professional Wireless MicrophonesConnect to multi-mic with different frequenciesWith automatic static speech and shock elimination circuitLED digital tube displayWireless distance 30-50mSimple operation interfaceCan be switched between 10 frequencyFrequency: 676 697MHzthe channel number of 10 conservative values each time the positive .ID. in the manufacturer set the switch.Oscillation mode DSP chip frequency lockingfrequency-stable 10 pmRF efficiency 10 dBmFG 40-18000Hzdistortion <0.59battery specification 1.SVIAA Size batterydedicated time 4-8 Hours (specification: frequency norm 676-679MHz, depending on battery type and capacityNP#9309390 (02.1.2026)