♫Clear Quality Signal Transmission. Our instruments wireless system is optimal for more stable and high-quality audio transmission. Low noise, low latency, no interference, 40-60 meters transmission distance. ♫High-sensitivity Pickup Sound: Built-in highly sensitive condenser microphone,perfectly capture the soundtrack of the instrument,make the sound more clear and realistic. ♫16 Channels: The UHF band has 16 channels to minimize the interference from electronics products like phones,TV and routers, WIFI equipment. Frequency Range: 570 - 588.7MHz. ♫Wide Application: The wireless mic compatible with voice amplifier, speaker system etc.Apply for concerts, band performances, personal exercises, band exercises.Wind music wireless microphone,suitable for all kinds of brass instruments such as trumpet, large, horn, trombone. ♫Super Battery Life: built-in 800mAh rechargeable lithium-ion battery, 6-8 hours available, red light on when charging, red light off when fully charged. Compact and portable, let you get rid of XLR cable and turn your audio equipment into a professional wireless device. Color: White Material: ABS Package Contents: 1 * Wireless Receiver 1 * Wireless Transmitter 1 * USB Cable 1 * English instruction manual