Item Type: Wireless Guitar SystemMaterial: ABSWireless Power: 10mWSampling: 48K 24bitDistortion: <0.05%Sound Delay: <1msTransmission Distance: > Approx. 50meter / 164ftResponse Range: 20Hz-20KHzSignal to Noise Channel: 90dBBattery Type: Built-in rechargeable lithium batteryBattery Capacity: 560mAHHow to Use: 1. Long press the transmitter power button for 1 second, the ID indicator lights up, and the transmitter turns on. In the power-on state, press and hold the power button for 1 second to shut down.2. Long press the receiver power button for 1 second, the ID indicator lights up, the receiver is turned on, paired and connected, and when it is turned on, press and hold the power button for 1 second to shut down.Size(LxW): Approx. 95 x 38mm / 3.7 x 1.5in