Features:Wireless transmitter and receiver set, suitable for electro-acoustic instruments such as guitars and bass.Uhf 730mhz original sound transmission, anti-interface and ultra-short delay, give you the best music sound.Support 4 devices to work at the same time, one to one; the maximum transmission distance can reach 50 meters.Built-in rechargeable lithium battery, long working time; and equipped with USB data cable, convenient for charging.Plug and play, easy to use; compact and light, easy to carry.Specification:Colour: BlackMaterial: ABSAudio response range: 20hz-20khzFrequency: UHF 730mhzTransmission range: max.50m (no obstacles); 30m (through walls)Transmission delay: less than 4msPower supply: built-in rechargeable lithium battery 3.7v 600mah chargingMouth: micro-usbItem size: 11*4.5*1.5cm / 4.3*1.8*0.6 inchesWeight Item Size: 35g / 1.2oz (each piece)packing list:1 * Transmitter1 * Receiver1 * User Manual1 * USB charging cableNotice:The above is only the package content and does not include other products.The guitar amplifier and guitar shown in the picture are not included.Light photography and different monitors may cause the color of the object in the image to be slightly different from the actual object. The allowable measurement error is +/- 1-3cm.2 pieces of guitar UHF wireless system wireless transmitter receiver guitar transmitter built-in rechargeable battery