Wireless transmitter & receiver set for electroacoustic musical instruments like guitar, , etc.UHF 730MHz original sound transmission, anti-interface and ultra-short delay, giving you the best music sound.Supports 4 sets of devices working at same time, one-to-one; and max. transmission range is up to 50 meters.Built-in rechargeable lithium battery, long working hours; and comes with USB cable for convenient charging.Plug and play, simple to use; compact size and lightweight, easy to carry.Color: blackMaterial: ABSAudio Response Range: 20Hz-20kHzFrequency: UHF 730MHzTransmission Range: Max50M (No obstacle); 30M (through-wall)Transmission Delay: Less Than 4ms Supply: Built-in 37V 600mAh rechargeable lithium batteryCharge Port: -USBItem Size: 11 * 45 * 15cm / 43 * 18 * 06 inchPackage Contents:1 * Transmitter1 * Receiver1 * User Manual1 * USB Charging CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.