Feature: Ideal for any guitar, chromatic instrument, bass, violin, and ukulele player Small and exquisite appearance, it is convenient to carry and convenient to use. Super bright backlight, LCD display, it can provide excellent visibility. It can 360-degree freely turn, it can adjust at your suitable angle, simple and practical. Matched with 3V CR2032 lithium battery, it is convenient to use. With a clip, it is easy to fix on the instrument. Screen: LCD display Power: 3V (CR2032 lithium battery) A4 Range: 430Hz--450Hz Tuning Type: Guitar, Chromatic, Bass, Violin, Ukulele Tuning Range: A0(27.5Hz)--a3(1760Hz) Tuning Accuracy: ±1cent Item size: Approx. 4.8X3.5X1.3cm(L*W*H) Color: As shown Powered by one CR2032 button battery Note: Due to the different monitor and light effect, the actual color maybe a slight different from the picture color; Please allow 1-2cm differences due to manual measurement. Thank you!