1、The maximum transmission range up to 60 meters. 2、UHF frequency transmission, strong signal, anti-interference, high fidelity, stable and non-string frequency. 3、The transmitter can be used with multiple receivers at the same time. 4、Built-in rechargeable lithium battery, long working time, equipped with USB cable, easy to charge. 5、Plug and play, easy to use, small size, light weight, easy to carry. 6、Equipped with 6.35mm female revolution 3.5mm revolution connector, it can be used for small audio equipment with 3.5mm input socket and electronic equipment such as mobile phone and computer. Wireless transmitter and receiver can be used for electroacoustic instruments such as guitar, bass, violin and so on. Features: The maximum transmission range up to 60 meters. UHF frequency transmission, strong signal, anti-interference, high fidelity, stable and non-string frequency. The transmitter can be used with multiple receivers at the same time. Built-in rechargeable lithium battery, long working time, equipped with USB cable, easy to charge. Plug and play, easy to use, small size, light weight, easy to carry. Equipped with 6.35mm female revolution 3.5mm revolution connector, it can be used for small audio equipment with 3.5mm input socket and electronic equipment such as mobile phone and computer. Specifications: Color: black Material: plastics+metal Transmission range: maximum range 60m (barrier-free) Battery: 3.7V, 1200mAh (transmitter and receiver) Continuous use time: 8-10h Package size: 185 * 140 * 50mm / 7.3 * 5.5 * 2.0in Package weight: 300g / 10.6ounce Packing List: 1 * Transmitter 1 * Receiver 2 * USB Cable 2 * 6.35mm to 3.5mm Adapter 1 * User Manual 1 * Transmitter 1 * Receiver 2 * USB Cable 2 * 6.35mm to 3.5mm Adapter 1 * User Manual