1、Wireless transmitter and receiver set for electroacoustic musical instruments like guitar, bass, etc. 2、Anti-interface and ultra-short delay, giving you the finest music sound. 3、Foldable body, more convenient for using and bringing. 4、Built-in rechargeable lithium battery, long working hours, and comes with USB cable for convenient charge. 5、Plug and play, simple to use. Compact size and lightweight, easy to carry. Wireless transmitter and receiver can be used for electroacoustic instruments such as guitar, bass, violin and so on. Features: Wireless transmitter and receiver set for electroacoustic musical instruments like guitar, bass, etc. Anti-interface and ultra-short delay, giving you the finest music sound. Foldable body, more convenient for using and bringing. Built-in rechargeable lithium battery, long working hours, and comes with USB cable for convenient charge. Plug and play, simple to use. Compact size and lightweight, easy to carry. Specifications: Frequency bandwidth: 20Hz-20kHz Transmission delay: less than 4ms Transmitter battery: 1 * 3.7V 600mAh rechargeable lithium battery Receiver battery: 1 * 3.7V 600mAh rechargeable lithium battery Charge port: micro USB Item size: 125 * 40 * 25mm / 4.9 * 1.6 * 1.0in Item weight: 39g / 1.4ounce Package size: 147 * 106 * 45mm / 5.8 * 4.2 * 1.8in Package weight: 204g / 7.2ounce Packing List: 1 * Transmitter 1 * Receiver 1 * USB Cable 1 * User Manual 1 * Transmitter 1 * Receiver 1 * USB Cable 1 * User Manual