Portable Wireless Audio Transmitter Receiver System for Electric Guitar Electric Violin Instrument Portable wireless audio transmitter & receiver, about 50m effective transmission range. Supports 1-6 sets working at the time, strong anti-jamming. Compact and lightweight, convenient to store and carry around. Suitable for electric guitar, , electric violin and other electroacoustic instruments. COLOR: black Material: ABS Comes with a 6.35mm to 3.5mm adapter for connecting with different audio devices. Working Frequency: VHF 200-271MHz Transmission Range: About 50M (No obstacle) Frequency Response: 60Hz-18KHz Working Temperature: -10 Celsius -50 Celsius Supply: 2 * AA Batteries for each (Not included) Item Size: 11 * 3.5 * 2.5cm / 4.3 * 1.4 * 1inch Package Content: 1* Receiver 1* transmitter 2* antenna 1* adapter Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.