With a clip, it is easy to fix on the instrument.Small and exquisite appearance, it is convenient to carry.LCD display, it can provide excellent visibility.It can be used for the tuning of guitar, chromatic, bass, violin, and ukulele.It can adjust at your suitable angle, simple and practical,It can 360-degree freely turn.It is powered by 3V CR2032 lithium button battery(not included)Specifications:Color: blackMaterial: PlasticSize: 58*30*43mmA4 range: 430-450HZRange: A0(27.5MHZ)-C8(4186HZ)Power: 3V CR2032 button battery(not included)Package Contents:1 x Guitar TunerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.