Product name: 2.4G audio wireless ceiver Product channel: 2.4GHz ISM band System frequency response: 10Hz-22KHz ±1dB Effective use distance: within 30 meters Distortion: Less than 0.02% Fully working time: 10H The mission distance is up to 30 meters, the shackles of wires and play without stopping. The plug angle can be rotated 220 degrees to fit all electric guitars, including -style electric guitars with rockers. 6.5/3.5MM dual plug is more compatible Electric guitar, bass, electric blowpipe, electric violin, electric drum, electric guzheng and other electroacoustic instruments Just plug the mitter into an electric guitar/electric blowpipe/electronic keyboard and other electroacoustic instruments, and the receiver into a playback device such as a speaker. Colour:Black Material:plastic Package Contents: 1 x receiver 1 x mitter Only the above package content, other products are not included. Note: Light reflection 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.