Features:<br />Audio Wireless System: wireless transmitter &amp; receiver set is designed for electronic music instruments, like guitar, bass, etc.<br />Stable Transmission: interference-free, super low latency transmission, less than 6ms, supports a long effective distance up to 100 feet.<br />Built-in Li-polymer Battery: it can continuously work for 6~7 hours by high capacity battery that is conveniently recharged via included USB cable.<br />Auto Pairing: transmitter and receiver will automatically pair with each other; if they cannot connect, they just need a press on pairing button.<br />Indicator Light: one light on the panel shows working state, battery status and whether receiver successfully pairs with transmitter or not.<br/>Specifications:<br />Brand: DOUBLE<br />Model: W2<br />Main Color: Black<br />Frequency Response: 20Hz-20kHz<br />Transmission Range: Up to 100 feet line-of-sight<br />Latency: Less than 6ms<br />Battery: 3.7V 800mAh Lithium Battery<br />Receiver/Transmitter Weight: 48g / 1.69oz<br />Receiver/Transmitter Size: 12.5*4*2.3cm / 4.92*1.57*0.90in<br />Package Weight: 248g / 8.74oz<br />Package Size: 18*13.5*4.5cm / 7.08*5.31*1.77in<br/>Note:<br />Audio wireless system only, other accessories in the pictures are not included.<br />All data is just for reference only, please refer to the actual product.<br />Please read the user manual carefully for more information before usage.<br />Due to manual measurement, there may be deviation, please in kind prevail.<br />Due to lighting or other reasons, the picture and material object may slightly differ.<br/>Packing List:<br />1 * Transmitter<br />1 * Receiver<br />1 * USB Charging Cable<br />1 * User Manual