Portable Wireless Audio Transmitter Receiver System for Electric Guitar Bass Electric Violin Musical Instrument  Portable wireless audio transmitter & receiver, about 50m effective transmission range.  Supports 1-6 sets working at the same time, strong anti-jamming.  Compact and lightweight, convenient to store and carry around.  Suitable for electric guitar, bass, 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  Power 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 shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.