Wireless transmitter receiver set for electroacoustic musical instruments like guitar, bass, etc.UHF 730MHz original sound transmission, anti-interface and ultra-short delay, giving you the .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; size and lightweight, easy to carry.Color: blackMaterial: ABSAudio Response Range: 20Hz-20kHzFrequency: UHF 730MHzTransmission Range: Max.50M (No obstacle); 30M (through-wall)Transmission Delay: Less Than 4msPower Supply: Built-in 3.7V 600mAh rechargeable lithium batteryCharge Port: -USBItem Size: 11 * 4.5 * 1.5cm / 4.3 * 1.8 * 0.6 inchPackage Contents:1 * Transmitter1 * Receiver1 * 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.