Features: Wireless transmitter and receiver set, suitable for electroacoustic instruments such as guitars and bass. Uhf 730mhz original sound transmission, antiinterface and ultrashort 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. Builtin 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: Black Material: ABS Audio response range: 20hz20khz Frequency: UHF 730mhz Transmission range: max.50m (no obstacles) 30m (through walls) Transmission delay: less than 4ms Power supply: builtin rechargeable lithium battery 3.7v 600mah charging Mouth: microusb Item size: 11x4.5x1.5cm or 4.3x1.8x0.6 inches Weight Item Size: 35g or 1.2oz (each piece) packing list: 1 x Transmitter 1 x Receiver 1 x User Manual 1 x USB charging cable Notice: 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 13cm. 2 pieces of guitar UHF wireless system wireless transmitter receiver guitar transmitter builtin rechargeable battery