Worked as Tuner & Metronome, good helper for novice.Small and exquisite appearance, it is convenient to carry. Super bright backlight, LCD display(3.7 * 2.3cm), it can 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 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:+-1 centPower: 1*CR2032 battery (Battery not include)Power consumption: Turning mode: less than 12mA; Metronome mode: less than 20mADisplay size: .3.7*2.3cm/1.5*0.9inProduct weight: 32g/1.10zPackage List:1 * Electronic tuner1 * manual (English)