Bietrun UHF Wireless Microphone Headset, 165ft Range, Working Time 6H, 1/4''Plug, Wireless Headset Mic ＆Handheld Mic 2 in 1, for Karaoke Speaker, Amplifier, Speakers, PA System, Teaching, Fitness

✔Cardioid Microphone to Clear voice. ✔Plug and play.No need pair. ✔165 feet(50 meter) signal receiving effective distance. ✔ UHF Wireless Tech: FCC certified independent high-frequency band, no cross-frequency interference when multiple units are used together. ✔Upgraded from 300 to 450 mAh, work 6-7 hours. ✔3 red indicators represent 100% left battery, 2 for 66% left, 1 for 33% left. ✔15 Sets Working Simultaneously: Support 15 sets of microphones working simultaneously in different frequency bands without interfering with each other. ✔ Use Directly: Voice amplifier, Power amplifier, Stage Speaker, Mixer. ✔ Support Jack: 6.35 mm MIC jack. Please note: ✘ NOT Support Jack: AUX/Line in jack. ✘ NOT Support Devices: Bluetooth speaker, iMac, MacBook. ✘ NOT Included: Product NO speaker, NO amplifier, NO auditory function. What if it doesn't work or has NO Sound? 1. Firstly turn on the power and observe the battery indicators to confirm whether they have electricity, charge them if low battery. 2. Then check if your device is within the range of devices supported by the microphone: AUX/Line in jack, Bluetooth speaker, Laptop computer and MacBook are not supported. 3. Freely contact if any questions! What if it can't Pair? If the blue lights continue flashing, means that the pairing was not successful, please re-pair them with following steps: 1. Turn off the transmitter and receiver; 2. Turn on the transmitter and long press key "volume+" "volume-"at the same time for 5 seconds, the indicator light starts flashing blue, waiting for pairing; 3. Turn on the receiver, wait for auto pairing about 5 seconds; 4. Indicator light of the transmitter and receiver stop flashing after a successful pairing. How to use multiple wireless microphone headsets at the same time? When multiple sets of WXM05 are used in the same place at the same time, the frequency point needs to be cut: Press and hold volume "-" button for 5 seconds to switch the frequency randomly. It supports up to 15 sets of WXM05.