ET-33/ET-37 Guitar Violin Ukulele Tuner Multifunctional Specification: Item model number: ET-37 Product name: Clip-on Tuner Product features: 360° rotation, small size, simple operation Tuning mode: C twelve well-tempered / G guitar / B bass / V violin / U ukulele / W wind A4 reference audio frequency: 430Hz-450Hz Tuning range: A0(27.5Hz)-C8(4186Hz) Guitar falling accompaniment: b, bb Wind music debugging: C, F, Bb, Eb Battery: CR2032 Description: 1. Product features: sensitive tuning, two-color backlight, exquisite atmosphere, clip-on backlight tuning device, exquisite workmanship 2. Scope of application: C (12 well-tempered (common to all musical instruments), G (guitar), B (bass), V (violin), U (ukulele) 3. Pickup method: clip on the instrument to vibrate and pick up the sound 4. Tuning mode: automatic tuning A4 frequency: 440Hz 5. Tuning range: A0(27.5Hz)-A6(1760Hz) Tuning error: ±0.5 cents 6. Size: ≤35mm×48mm×54mm Colour: Black Packing List: tuner machine 3V button battery manual 1 original box Notes: 1. Please allow 1-3cm difference due to manual measurement and 3-5g, the difference between different colors. 2. Due to screen differences, the color may be a little different from what you expect, please allow it.