Technical Specifications Tuning Item: Tuning under special key: C (Chromatic) String instrument tuning: Guitar (G) Bass(B) Tuning Range: A0 (27.5 Hz) – C8 (4186 Hz) A4 Calibration: 430 Hz – 450 Hz Tuning Mode: Clip Tuning Accuracy: +/- 1 cents Power: 1 piece CR2032 (3V) Weight: 116 grams