JW-03 is a wireless audio system device transmitted by high-quality signal transmission. It has a distance of greater than 20 meters, a signal delay of less than 5ms, and anti-interference. In the 12 channels, only simple settings are needed to apply for various occasions to bid farewell to the line restraint. The built -in charging lithium battery is long working, equipped with a universal Android port USB cable, which is convenient for charging. Plug and use it, simple, small size, light weight, easy to carry.