Wireless and receiver can be used for electroacoustic instruments such as guitar, bass, violin and so on. Features: Wireless and receiver set for electroacoustic musical instruments like guitar, bass, etc. UHF 730MHz sound transmission, anti-interface and ultra-short delay, giving you perfect sound. Foldable body, more convenient for using and bringing. Built-in rechargeable battery, long working hours, and comes with USB cable for convenient charging. Plug and play, simple to use. Compact size and lightweight, easy to carry. Specifications: Color: black, blue (optional) Frequency : 2.4GHz-2.483GHz Frequency bandwidth: 20Hz-20kHz Transmission : 30M Transmission delay: less than 12ms battery: 1 * 3.7V 600mAh rechargeable battery Receiver battery: 1 * 3.7V 600mAh rechargeable battery Charge port: USB Item size: 133 * 40 * 25mm / 5.2 * 1.6 * 1.0in Item weight: 39g / 1.3ounce Package size: 173 * 106 * 52mm / 6.8 * 4.2 * 2.0in Package weight: 260g / 9.1ounce Packing List: 1 * 1 * Receiver 1 * Charge Cable Wireless and receiver set for electroacoustic musical instruments like guitar, bass, etc. UHF 730MHz sound transmission, anti-interface and ultra-short delay, giving you perfect music sound. Foldable body, more convenient for using and bringing. Built-in rechargeable battery, long working hours, and comes with USB cable for convenient charging. Plug and play, simple to use. Compact size and lightweight, easy to carry.