UHF Guitar Wireless System Transmitter Receiver wireless guitar transmitter Built in Rechargeable. Feature: 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 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. Specification: Color: black; Material: ABS; Audio Response Range: 20Hz-20kHz; Frequency: UHF 730MHz; Transmission Range: Max.50M (No obstacle); 30M (through-wall); Transmission Delay: Less Than 4ms; Power Supply: Built-in 3.7V 600mAh rechargeable lithium battery; Charge Port: Micro-USB; Item Size: 11 * 4.5 * 1.5cm / 4.3 * 1.8 * 0.6 inch; Item Weight: 35g / 1.2oz (for each); Package List: 1 * Transmitter; 1 * Receiver; 1 * User Manual; 1 * USB Charging Cable;