KH Professional UHF Wireless Headset Microphone for Voice Amplifiers (66 Head) Microphone

?Signal Stability?No Delay?No Radiation ?Anti-Howling ?Anti-Jamming ?Constant Frequency ?Clearer Sound Quality. Compatible voice amplifiers, multimedia. It is a portable Karaoke equipment.( Easy to use: Please turn on the transmitter and receiver power switches, the blue light will flash for approximately 2s. Indicator light stops flashing after a successful match, then you can use it. No further operation. Charge and work of wireless microphones: The transmitter and receiver are built-in 400 mah rechargeable lithium-ion batteries that can offer about 6 hours working time. ?Usb cable has two micro USB V2.0 to charge for the transmitter and receiver simultaneously. Fully charge is only 2.5 hours Use up to 15 microphone headset at the same time. Built-in cardioid polar pattern condenser microphone, widely applied to conference, speech, Web podcast, Youtube, Google, outdoor Live, Yoga instructor, voice amplifier, dancing instructor, promotion, game etc. What if can't pair or no sound: ?1, Turn off the receiver and transmitter ? 2, Turn on the transmitter?Handheld Microphone), blue light is on, long press “+ ” to flash the blue light ?3, Turn on the receiver and wait for connection ?4, The blue lights of the transmitter and receiver stop flashing, the connection is successful.