WIRELESS MICROPHONE  BUILT IN ECHO AND TONE CONTROL UHF-300 Series Rechargeable Wireless Microphone Karaoke Cordless Microphone with Volume & Echo Control and Receiver, UHF Handheld Dynamic Microphone for Singing Karaoke Speech, Black Best Dual UHF Wireless Microphone with Volume Control + ECHO Function. Easy to set up and use! Perfect for karaoke, speech, meeting, performance, indoors or outdoors. Rechargeable UHF Dual Wireless Microphone with Receiver System. When fully charged, the microphone's working time will be about 8 or 10 Hours until you need to charge again, the receiver's working time is about 5 Hours; Dual USB Charging Port for Charging.

WIRELESS MICROPHONE BUILT IN ECHO AND TONE CONTROL UHF-300 Series Rechargeable Wireless Microphone Karaoke Cordless Microphone with Volume & Echo Control and Receiver, UHF Handheld Dynamic Microphone for Singing Karaoke Speech, Black Best Dual UHF Wireless Microphone with Volume Control + ECHO Function. Easy to set up and use! Perfect for karaoke, speech, meeting, performance, indoors or outdoors. Rechargeable UHF Dual Wireless Microphone with Receiver System. When fully charged, the microphone's working time will be about 8 or 10 Hours until you need to charge again, the receiver's working time is about 5 Hours; Dual USB Charging Port for Charging.

UHF-200 Series Rechargeable Wireless Microphone Karaoke, UHF Handheld Dynamic Microphone for Singing Karaoke Speech, Black Best Dual UHF Wireless. Perfect for Karaoke, Speech, Meeting, Performance, Indoors or Outdoors. A receiver with Built-in rechargeable battery. When fully charged, receiver working time is about 3 Hours