Feature: 1.Wireless guitar system features digital wireless technology that delivers great audio quality, simple setup, and is extremely reliable for any musicians. UHF 730MHz original sound transmission, anti-interference and ultra-short delay, giving you the best music sound. 2.The wireless guitar system delivers a full 20Hz-20kHz frequency response, so you/x27;ll hear your guitar tone in great detail with only 4ms of latency. Low noise and latency 3.Supports 4 sets of devices working at same time, one-to-one; and max. transmission range is up to 50 meters.You are afforded the freedom to roam the stage for a truly dynamic performance. 4.Built-in rechargeable lithium battery, working time of the guitar transmitter / receiver is up to 4 hours, and with a USB cable for convenient recharging, which ensures good performance for your every show. 5.Plug and play, simple to use; compact size and lightweight, easy to carry. Precautions for use: 1. Before use, please confirm the transmitter and receiver connections (operate according to the instructions), make sure that the transmitter is plugged into the instrument and the receiver is plugged into the speaker, otherwise no sound will be transmitted. 2. It is recommended to charge for 1-2 hours before using for the first time. The factory is not fully charged when shipped. 3. If there is noise or intermittent connection, it may be due to the following reasons: insufficient battery power; displacement of the battery due to transportation (you can open the battery part and move the battery to the right); the distance is too far (within 15 meters, the effect is better. ); there is a strong interference source nearby. Specification: Color: Black Material: ABS Item Size: 11/4.5/1.5cm/4.3 / 1.8 / 0.6 inch Audio Response Ranges: 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 Note: - The guitar and guitar amplifier showed in the picture are not included. - There might be little error of size for manual measurement. - Due to different lighting effect and monitor setting, actual item/x27;s color may not exactly reflect color on pictures.