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 sound automatically and 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 angle you need. 4. Rubber Pads: elastic clips have rubber pads which can tuner from sliding and also surface of instrument from scratching. 5. Applicable Objects: tuner is suitable for classical guitar acoustic guitar electric guitar ukulele bass chromatic etc. It is suitable for teachers professional and beginning players. Note: 1. Due to manual measurement 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 Supply: 1 * 3V CR2032 Cell Tuning Iterm: G ( Guitar ) B ( Bass ) V ( Violin ) U ( Ukulele ) C ( Chromatic ) Tuning : 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 Cell 1 * User Manual ( English )