2 receiver Specification 1: Frequency Range a channel 666.8/B channel 668.6 mhz 2: number of channels 16(conservative values) each time paired, ID code random changes in the manufacturer set the frequency range. 3: Oscillation mode DSP chip frequency lock 4: rate stability ± 10 ppm 5: receiving sensitivity -95 ~ -71 dbm 6: audio frequency response 40 ~ 18000 Hz 7: distortion ≤0.5% 8: Snr ≥90 db 9: Audio Output 300 mv (MAX)10: Battery Specification 3.7 V/18650 Battery 11: Life Time 4 ~ 8 hours (depending on battery type and capacity)
