brand new and high quality,2.4GHz high-quality lossless digital transmission, 48K/24bit performance sound quality, full digital, high-frequency anti-interference, for broadband, lossless transmission.One-key switching of 4 channels, no need to pair, support 4 groups of devices to use at the same , different devices can different channels.Transmission distance of 30 meters/1181inches indoors, 15 meters/590.55inches for transmission through partitions.5 hours high-energy battery life, built-in rechargeable 650mAh polymer lithium battery.6.35mm international standard audio for head, 282 rotatable, suitable for all musical instruments, and can be folded to the musical instrument when in use.Transmission sound quality:48k/24bit lossless digital transmissionTransmission frequency band:2.4GHz frequency bandTransmission distance:30 meters outdoor transmission: 15 meters through the wall transmissionTransmission delay:10msSignal-to-noise ratio:-98dbDistortion:Less than0.02%Dynamic range:Greater than105dbFrequency response:20-20KHz; +1db/-3dbRotation angle of audio head:280Simultaneous use of multiple devices:4 groupsBattery:Rechargeable lithium battery that supports short circuit for protection, one with two TYPE-C chargingColour:BlackMaterial:ABSPackage Contents:1 * Guitar System Transmitter1 * Guitar System ReceiverOnly 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.