Features: Plug and play, simple to use; compact size and , easy to carry.The speed is quick, the anti-interference ability is strong, and the transmission performance is more stable. The 270 rotatable plug can cope with position and angle sockets, which is more convenient to use. The LED display shows the current frequency band, volume and current battery level. Wireless transmitter & receiver set for electroacoustic musical instruments like guitar, bass, etc. One transmitter, can support multiple devices to receive, the transmission range can reach more than 30 meters.Built-in rechargeable lithium battery, long working hours, equipped with USB cable, charge more convenient. Specifications: Power: Less than75mA Frequency range: 636MHz-799.5MHz Battery: 3.7V, 500mAh Material: ABS colour: black Package Contents: 1 x Transmitter 1 x Receiver Only 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.