Wireless sound hole pickup system for acoustic guitars with sound hole of 80mm-120mm.2 Working Mode:Wireless/wired Mode;and easy to installDual 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 hallModel:X2Transmission Range: Max.30MPower Supply: Built-in rechargeable lithium batteryDue to different batches, the appearance of some accessories may be slightly different, which not affect the use.Colour:B:BlackMaterial:Aluminum plasticPackage Contents:1 * Wireless Soundhole Pickup KitOnly 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.