Worked as Tuner and Metronome, good helper for novice.Small and exquisite appearance, it is convenient to carry. Super bright backlight, LCD display(3.7 x 2.3cm), it can provide excellent visibility. rotatable clip, it can adjust at your suitable angle, simple and practical.With a clip, it is easy to fix on the instrument. Auto power off function, the device will turn off automatically if there is no signal present or operation in 5mins.It can be used for the tuning of guitar, chromatic, bass, violin and ukulele C.material: plasticTuning Accuracy Indicator:Low: The indicator points to the left, showing orange High: The indicator points to the right, showing orange In tune: The indicator points to the middle, showing green.Color: BlackTurning items: Chromatic, Guitar, Bass, Violin, Ukulele CTuning range: A0(27.5Hz)-C8(4186.0Hz)A4 frequency: 430-450HzBeat:0-9Tempo:30-250bpmPrecision:and-1 centPower: 1xCR2032 battery (Battery not include)Power consumption: Turning mode: less than 12mA Metronome mode: less than 20mADisplay size: .3.7x2.3cm or 1.5x0.9inProduct weight: 32g or 1.10zPackage List:1 x Electronic tuner1 x User manual (English)Only the above package content, other products are not included.Note: Light reflection 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.