For sale is a working guitar wireless system (Chinese product), convenient for instruments that use amplifiers such as electric guitars and bass guitars. This is a set of a wireless audio transmitter and receiver designed for guitars and other instruments, along with a USB cable that can charge both simultaneously. There's no need for troublesome channel matching; simply plug the product body into the instrument and amplifier respectively, turn on the power, and pairing is complete, allowing you to immediately produce sound. I used it a few times for small live performances at facilities, connecting it to a bass and amplifier, and 2-3 times for practice. A full charge easily lasts for about 2 hours total, including rehearsals and live performances. Both units have no scratches or dirt. The packaging has a little damage. Product Specifications Audio Response Range: 20Hz～20kHz Frequency: UHF 730MHz Transmission Range: Up to 50M (without obstacles) / 30M (through walls) Transmission Delay: Less than 4ms Power: Built-in lithium battery Charging Port: Micro USB Thank you. 0723