Korg TM-40 Large Display Digital Tuner and Metronome 

• Manufacturer  Korg
• MPN  KOR TM40
• Release Date  7/22/2008
• UPC  603384033628
• Scale: 2 note equal temperament
• Detection Range*: C1 (32.70Hz) C5 (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