Factory default automatic frequency calibration frequency mode: frequency modulation

Use time: 8~10 hours usage time 8-10 hours

TX and RX empty distance 20 meters ~ 30 meters

(TX and RX are approximately the same distance) Frequency UHF UHF frequency range 600MHZ~900MHZ 宓 core: capacitive microphone core: capacitive

Supply current: 0DB <75MA supply current: 0DB <75MA

Power supply: polymer lithium battery power supply