Wireless sound hole pickup system for acoustic guitars with sound hole of 80mm-120mm. 2 Working Mode:Wireless/wired Mode;and easy to install Dual pickup system-magnetic and microphone, magnetic collects the vibration of the strings, and the mic collects the sound when you are tapping the guitar. Built-in rechargeable lithium battery, 8 hours usage time(Receiver) after a full charging, and USB charging cable is included.You can enjoy your performance without any worry. Better for liver house,bar and small concert hall Model:X2 Transmission Range: Max.30M Power Supply: Built-in rechargeable lithium battery Due to different batches, the appearance of some accessories may be slightly different, which will not affect the use. Colour:A:Silver Grey Material:Aluminum alloy+plastic Package Contents: 1 * Wireless Soundhole Pickup Kit 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.