KC Universal Wireless Microphone Series (Two Microphone), U802

A.features:
frequency range:uhf frequency (channel A and channel B)
use 24bit/48khz high performance audio special A/D and D/A processor
use id code+frequency for frequency match encryption. (although two receivers are using the same frequency, the receiving chip is interfered by rf signal.It only will affect the working distance, it will not cause noise.)
has auto mute and impact eliminating circuit, to avoid impact and noise while turn on/off the unit.

technical specification
Frequency range: huf frequency
Frequency Channel: 16 channels, ID code is changed random.
Oscillation Mode: DSP chip frequency lock
Frequency Stabillity: ?10ppm
Frequency Power:10dBm
Frequency Response: 40-18KHz
Distortion:?0.5%
Battery:1.5V/AA Size
Working Hours:4-8 hours.
Frequency range: 630-690MHz
Use range: 30-50 meters

Receiver specifications:
Frequency range: high frequency
Frequency Channel: 16 channels, the ID code changes randomly.
Oscillation mode: DSP chip frequency lock.
Frequency stability: ?10ppm
Receiving sensitivity-95~-71dBm
Frequency response: 40~18KHz
Signal to noise ratio: 290Db
Audio output: 300mv (maximum)

Dimensions (HxWxD): 19x30x6cm
Weight: 0.84kg