Features: Adopts Integrated Digital Chips: intelligent noise reduction, high sound quality reduction, strong anti-interference, and help you restore excellent sound quality. Stable Long-distance Reception: wireless transmission with 30M pickup distance, anti-interference and anti whistle, clear sound effect. Equipped with XLR to 6.35 Plugs for Transmitter Receiver: it can be used in the speaker, mixer, amplifier, guitar and other sound equipment. Clear LED Display Screen: real time display of frequency band and electric quantity, letting you pay attention to electric quantity in time, and it is convenient to use. Highlight the on / off condition of the machine to prevent forgetting to shut down. Built-in Long Endurance 500/800mAh Lithium Battery: high performance electric polymer lithium battery has a lasting endurance working hours.