Features 1、Clip-on tuner with chromatic(C), guitar(G), ukulele(U), violin(V) tuning modes. 2、Built-in rechargeable battery allows over 10 hours of continuous use per charge. 3、High contrast LCD color display showing the tuning status, bright and clear. 4、Strong and flexible clip for the best viewing angle. 5、Auto power off function for maximum battery life. Specifications: Features: Clip-on tuner with chromatic(C), guitar(G), ukulele(U), violin(V) tuning modes. Built-in rechargeable battery allows over 10 hours of continuous use per charge. High contrast LCD color display showing the tuning status, bright and clear. Strong and flexible clip for the best viewing angle. Auto power off function for maximum battery life. Specifications: Brand: Cherub Model: WST-670 Color: Black Tuning Modes: Chromatic(C)/ Guitar(G)/ Ukulele(U)/ Violin(V) Detection Range: A0(27.50Hz)-C8(4186Hz) Detection Method: piezo(clip) Reference Pitch: 440Hz Tuning Precision: +/-1 cent Power Supply: Rechargeable built-in Li-Po battery(3.7V 180mAh) Item Weight: 30g/ 1.1oz Package Size: 10.5 * 9.5 * 5cm/ 4.1 * 3.7 * 2in Package Weight: 130g/ 4.6oz Note: The guitar showed in the picture is not included. Package List: 1 * Tuner 1 * USB Cable 1 * User Manual(English & Chinese) Package List 1 * Tuner 1 * USB Cable 1 * User Manual(English & Chinese)