Features:Small and exquisite appearance， it is convenient to carry.360 degree rotatable clip， it can adjust at your suitable angle， simple and practical.With a clip， it is easy to fix on the instrument.37 * 18mm clear LCD display.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， ukulele C， ukulele D.Tuning 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.Specifications:Color: BlackTurning items：Choromatic， guitar， bass， violin， ukulele C， ukulele DTuning range: A0 ( 27.5 Hz ) - C8 ( 4186.0 Hz )A4 frequency: 430-450HzPower: 1 * CR2032 battery (not included)Precision: ±1 centDisplay size: 3.7 * 1.8cm / 1.5 * 0.7inProduct weight: 26g / 0.9ozPackage size: 4.5 * 4 * 6.5cm / 1.8 * 1.6 * 2.6inPackage weight: 34g / 1.2ozNote:Remove the battery if you don't use it for a long period.Package List:1 * Electric tuner1 * User manual (English & Chinese)