Review on Professional UHF Dual Handheld Dynamic Metal Mic System with Bluetooth and Wireless Receiver, Rechargeable, 160 ft Range, 1/4'' Output - Ideal for Karaoke Machine, Singing, Amps, PA Speaker by Michael Norwood

Plug and Play Mic: No pair required. ◆Only for input devices with 6.35 mm (1/4") or 3.5 mm (1/8") microphone interface, such as B. Speaker, Singing Machine, Audio Amplifier, Speaker System, Voice Amplifier, Truck Speaker, Dome Speaker, etc. ◆ A rechargeable Bluetooth receiver that can be connected to a smartphone for karaoke on the speaker. Or as a Bluetooth receiver to play music on old speakers. ◆ Turn on the receiver, search the Bluetooth name: Bietrun 21, turn on the karaoke music.