1Guitar wireless system is made with new process, ultrasonic welding assembly 2Possess reverberation delay, treble adjustment, bass adjustment, sound field effect, Bluetooth function and other functions 3The wireless system provide lowloss transmission, close to the original sound quality 4Transmission delay is less than 4 milliseconds, fluent and fast, you can use with confidence 5Plug and play, easy to use, possess small size with light weight, easy to carry Item Type: Guitar Wireless System Frequency Range: UHF Frequency Broadband: 20Hz-20kHz Transmission Delay: Less than 4 milliseconds Charging Port: Micro USB Charging Time: 2 Hours Use Time: 4 Hours Size: Approx. 103 x 42 x 17mm / 4.1 x 1.7 x 0.7in Power Supply: Built-in 3.7V 600mAh rechargeable lithium battery 1 x Transmitter 1 x Receiver 1 x USB Cable 1 x User Manual