Feature: 1. RECHARGEABLE BATTERY: The built-in rechargeable battery allows continuous use of more than 10 hours per charge. 2. LCD DISPLAY: The tuner features a high-contrast color LCD screen to display tuning status, bright and clear. 3. FLEXIBLE ANGLE: The tuner has an adjustable design for optimal viewing angle, providing a comfortable user experience. 4. AUTO SHUTDOWN: The tuner automatically powers off to save energy and extend battery life. 5. HIGH ACCURACY: Offers high tuning accuracy with 1 cent error, reliable and practical. Specification: Item Type: Guitar Tuner Material: ABS Tuning Range: A0 (27.50Hz) to C8 (4186.0Hz) A4 Value Range: 440Hz Tuning Items: 12 equal temperament, guitar, violin, ukulele Tuning Accuracy: 1 Cent Power Supply: Rechargeable lithium battery (Included) Size: Approx. 49x26x40mm / 1.9x1x1.6in Weight: Approx. 20g / 0.7oz Package List: 1 x Guitar Tuner 1 x User Manual 1 x Certificate of Conformity 1 x Micro USB Charging Cable