We offer discount for large quantity. We invite you to ! Wireless UHF Transceiver System Built-in Rechargeable BatteryWireless 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: ABSouch 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 Item Size: 11 * 4.5 * 1.5cm / 4.3 * 1.8 * 0.6 inch Item Weight: 35g / 1.2oz (for each)Note: The guitar and guitar amp shown in the picture are not included. Package List:1 * Transmitter1 * Receiver1 * User Manual1 * USB Charging Cable (Random Color)Only 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. About UsWe provide good product with best price, we support wholesale order/