1.UHF high-quality digital transmission, 48K/24bit transmission sound quality, low noise and anti-interference, plug and play. 2.4 Channels can be switched with one key, no pairing is required, and 4 groups of devices can be used at the same time, and different devices can different channels. 3. Indoor transmission distance of 50 , and partition wall transmission of 30 4.5 hours of high-energy battery life, built-in rechargeable 650mAh polymer lithium battery 5.6.35mm international standard audio head, 282degree rotatable, suitable for all electric musical instruments, and can be folded to the musical instrument when in use. 1. Transmission sound quality: 48k/24bit digital transmission 2. Transmission frequency band: UHF (800MHz-900MHz) frequency band 3. Transmission distance: outdoor 50 transmission: 30 through the wall transmission 4. Transmission delay: 5ms 5. Signal to noise : -98db 6. Distortion: Less than 0.02% 7. Dynamic range: 105db 8. Frequency response: 20-20KHz; +1db/-3db 9. Audio head rotation angle: 282degree 10. Simultaneous use of multiple devices: 4 groups 11. Battery: built-in rechargeable lithium battery, one for two TYPE-C charging Colour:red Material:Plastic + Metal Size:13.4 x 3.9cm Package Contents: 1 x Guitar System Transmitter 1 x Guitar System Receiver 1 x cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.