Features 1、Acoustic guitar Soundhole pickup designed for classic guitars /u0026 folk guitars. 2、Piezo stick /u0026 microphone double pickup ensure more excellent acoustic guitar tone and deeper tapping sound. 3、With tone /u0026 volume adjusting knobs, supports phase function, and the mic volume can be adjusted also. 4、Built-in rechargeable lithium batter, which can be quickly recharged by the included USB cable. 5、Easy and quick installation, just hitch the pickup to rim of guitar sound hole, no need to cut holes on your guitar. Specifications: Features: Acoustic guitar Soundhole pickup designed for classic guitars & folk guitars. Piezo stick & microphone double pickup ensure more excellent acoustic guitar tone and deeper tapping sound. With tone & volume adjusting knobs, supports phase function, and the mic volume can be adjusted also. Built-in rechargeable lithium batter, which can be quickly recharged by the included USB cable. Easy and quick installation, just hitch the pickup to rim of guitar sound hole, no need to cut holes on your guitar. Specifications: Power Supply: built-in 3.7V 500mAh battery Item Size: 7.5 * 6 * 2.5cm/ 3 * 2.4 * 1in Item Weight: 30g/ 1.1oz Package Size: 16 * 10 * 6.5cm/ 6.3 * 3.9 * 2.6in Package Weight: 200g/ 7.1oz Note: The guitar showed in the picture is not included. Package List: 1 * Pickup 1 * Piezo Stick 1 * Endpin Jack 1 * USB Cable Package List 1 * Pickup 1 * Piezo Stick 1 * Endpin Jack 1 * USB Cable