Karaoke Wireless Rechargeable Microphone System: Updated UHF technology supports up to 30m transmission distance with no distortion or sound loss. Features include stable signal, no delay, anti-howling, anti-interference, distortion less than 0.1%, and adjustable frequency. Plug and Play: The wireless microphone and receiver are automatically paired when powered on. Wide Compatibility: Works with various devices such as amplifiers, PA systems, karaoke machines, and active speakers. Suitable for meetings, speeches, web podcasts, recording, outdoor use, yoga instruction, churches, family gatherings, opening ceremonies, dance instruction, promotions, and games. Color: Black Material: ABS Package Contents: 1 set * Wired Microphone Note: Other products are not included. Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.