Korg CA-2 Chromatic Tuner

Chormatic tuner 12 note equal temperament.
Range: A0 (27.50Hz) - C8 (4186.01Hz): Sine wave.
Tone : C4 (261.63Hz) - C5 (523.25Hz): One octave.
Range: A4 = 410Hz - 480Hz (1Hz steps).
Power supply Two AAA batteries (3V)
Battery life 200 hours.