This product is a clip digital tuner, suitable for guitar, violin, ukulele, bass, chromatic, etc. It is convenient and accurate for tuning. Features: 1. Easy To Use: Lightweight and compact size. It can pick up the sound automatically, and the tuning is accurate. 2. LCD Screen: Clear LCD digital display with white and green backlight making it easy to read. 3. 360 Degree Rotatable: With 360 degree rotational clip, you can adjust the angle you need. 4. Rubber Pads: The elastic clips have rubber pads, which can prevent the tuner from sliding and also protect the surface of the instrument from scratching. 5. Applicable Objects: The tuner is suitable for classical guitar, acoustic guitar, electric guitar, ukulele, bass, chromatic, etc. It is suitable for music teachers, professional and beginning players. Note: 1. Due to manual measurement, the size may be slightly different. Thank you for your understanding. 2. Due to different light conditions and different monitors, item color displayed in photos may be showing slightly different from real object. Specifications: Color: Black Material: ABS + Electronic Components Display: LCD Screen Power Supply: 1 * 3V CR2032 Lithium Cell Tuning Iterm: G ( Guitar ), B ( Bass ), V ( Violin ), U ( Ukulele ), C ( Chromatic ) Tuning Range: A0 ( 27.5Hz ) - C8 ( 4186.0Hz ) Tolerance: 1 Cent A4 Frequency: 440Hz Host Size: 3.3*4.3*1.2cm / 1.30*1.69*0.47in Clip Length: 5.2cm / 2.05in Packing Size: 9*4.2*3.8cm / 3.54*1.65*1.49in (L*W*H) Net Weight: 26g / 0.92oz Gross Weight: 34g / 1.20oz Package List: 1 * Tuner 1 * CR2032 Lithium Cell 1 * User Manual ( English )