Uhf Receiver For Bietrun Wireless Microphone Wxm02 / Wxm04, With 720Mah Use to replace your old, damaged, or non-working Bietrun WXM02, WXM04 wireless microphone receiver Receiver for Bietrun WXM02 / WXM04 Wireless Microphone : Use to replace your old, damaged, or non-working receiver. Note: The receiver only works with Bietrun WXM02 / WXM04 microphones. Pair Steps: 1. Turn off the receiver and mic. 2. Open the mic battery cap. 3. Press and hold the mic(HI-LO)button for 10s+ until the display channel flashes. 4. Quick turn on the receiver, wait for the mic channel display to stop flashing, and the blue light of the receiver is always on, ready to use. Built-in 720mAh Rechargeable Battery: Up to 4.5hrs working time. When the indicator light is blue and flashing fast, it indicates the battery power is low, please recharge the receiver. 160ft Long Distance Receiving Range: ?Can receive your microphone signals within 160ft/50m. ?Adopt the UHF wireless system, excellent anti-interference ability, and no latency. Plug And Play, Easy To Use: ?Can only plug-in equipment with MIC input, can't plug In AUX input, Otherwise, there will be no sound. (Not compatible with Bluetooth speakers and laptop) ?Idea for MIC input speaker, singing machine, audio amplifier, PA system, mixer, voice amplifier, and More streaming multimedia equipment.