The OT-120 is a chromatic tuner intended for the orchestra, packaging high performance and sophisticated functionality in a vertical design 's easy to hold and operate. It features a dual-display, an easy-to-see needle-type indicator and a backlit LCD screen shows the battery level, sound output level, calibration, key and note name.Additional design features include a dial makes it easy to select the desired mode, finger- buttons and a rear-mounted stand lets the unit stand by itself.With wide range extending from A0 to C8, the OT-120 lets you quickly tune any type of brass band or orchestral instrument - wind, string or keyboard. The OT-120 also provides a wide range of calibration to support concert pitches in a range of A4=349-499 Hz (1 Hz steps).Broad support for transposing instruments and historical temperaments. So you can conveniently tune any wind instrument, types of transposing are provided including both and flats. The Multi Temperament function provides eight presets cover the popular historical temperaments often used with period instruments.Smooth and high- tuning you expect from a needle-type meter. The OT-120 uses a high- needle-type meter to accurately indicate any pitch discrepancy. The speed at which the needle responds to the input can be changed over a range of three steps; you can rapid or slow needle movement to match your tuning preference.You can also from two tuning modes; Auto mode, which automatically detects the pitch of a single note you play on the input instrument, or Manual mode, which lets you specify the desired note name. In Manual mode the needle movement is shown in a range of +/- 500 cents, letting you view the tuning discrepancy over a wide range.In addition to the visibili unique to a needle-type meter, the LEDs located below the meter also indicate pitch deviation or a perfect match, making precise tuning easy even in locations.Colour: silverMaterial: ABSPackage Contents:1 * Orchestral TunerOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.