ET-33/ET-37 Guitar Violin Ukulele Tuner Specification: 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 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 1 original box 3V button battery a Chinese manual a tuner machine