Wireless transmitter and receiver kit for electro-acoustic musical instruments such as guitar, bass, etc. Original UHF 730MHz audio transmission, anti-interface and ultra-short delay, giving you the best music. Supports 4 sets of equipment working at the same time, one to one; And max. The transmission range is up to 50 meters. Built-in rechargeable lithium battery, long working hours; And it comes with a USB cable for convenient charging. Plug and play, simple to use; Compact size and lightweight, easy to carry. Color: BlackMaterial: ABSO Response Range: 20Hz-20kHzFrequency: UHF 730MHzTransmission Range: Max. 50M (unobstructed); 30M (Through Wall)Transmission Delay: Less than 4ms Power Supply: Built-in 3.7V 600mAh Rechargeable Lithium Battery Charging Port: Micro-USB Product Size: 11*4.5*1.5cm/4.3*1.8*0.6inch Package Contents:1 * Transmitter1 * Receiver1 * User Manual1 * USB Charging CableOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.