Feature: 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. Specification: 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 Package List: 1 * Transmitter 1 * Receiver 1 * USB Cable 1 * User Manual