Wireless Freedom: With a 200 foot operating range (line of sight), it can move freely during performances, suitable for indoor and outdoor activities such as home karaoke, church, wedding, conference, speech, and small stage performances. Reliable signal, no need to worry about sound being cut off during use. Rechargeable microphone and receiver: No need to purchase additional AA batteries. The microphone and receiver are both equipped with a built-in 1200 mAh rechargeable lithium-ion battery. Charging time is over 7 hours. Cool LED light ring (green work, red charging), enhancing the fashionable transparent white LED display screen. Plug and play and multi compatibility: Insert the receiver into an audio device with a 6.35mm or 3.5mm microphone jack. Then turn on the receiver and wireless microphone, they will automatically pair. Compatible with devices with 6.35mm (1/4 inch) or 3.5mm (1/8 inch) microphone interfaces, such as party speakers, singing machines, amplifiers, PA sys