Korg TM-40 Chromatic Combo Tuner Metronome

Scale: 12 note equal temperament
Detection Range*: C1 (32.70Hz) - C8 (4186.01Hz) for a sine wave
Reference Tone: C4 (261.63Hz) - C5 (523.25Hz) One octave or A Bb
Tuning Modes: Meter mode (AUTO), Sound Out mode (MANUAL)
Calibration Range: A4 = 410Hz 480Hz