CR1620 lithium battery (3V) x 1 (for verifying operation)
Settings for the calibration are remembered even when the power is turned off. However, this setting returns to the following initial value when you replace the batteries.
Initial value: Calibration=440 Hz
If 3 minutes elapses while no sound is being input to the tuner, the auto power-off function automatically turns the power off.
Even if the pitch is within the detection range, detection might not be possible if the sound of the instrument contains numerous overtones or has a rapid decay.
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