Digital wireless system (transmitter + receiver) for electric guitar, and other instruments. Using UHF wireless technology, it has strong anti-interference ability, stable signal transmission and delay less than 2ms. Supports the use of multiple wireless systems at the same time without interfering with each other, and the effective transmission distance can reach 50 meters. Suitable for different musical instruments and equipment, flexible to use. Built-in rechargeable lithium battery, long working time; equipped with a double-headed USB cable, convenient for charging the transmitter and receiver at the same time. Frequency response range: 10-20kHz Frequency range: UHF 903-924MHz Dynamic range: ≥90dB Transmission range: up to 50 meters (no obstacles) Transmission delay: less than 2 milliseconds Channels: 4 Charging time: 2.5-3 hours Battery life: 5 hours Color: Black Material: plastic Package Contents: 1 * Wireless Guitar Transmitter 1 * Wireless Guitar Receiver 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection 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.