Korg GT-4

Tuning:
12-note equal temperament
Detection Range:
B1 (23.13 Hz) to B6 (1975.54 Hz)
Auto Tuning Modes:
Strobe Mode; Mirror Mode; Meter Mode
Flat Tuning Function:
1 to 5 semitones (semitone steps)
Detection Accuracy:
Better than ±1 cent
Connections:
INPUT (1/4")
Power Supply:
Two AAA batteries (3V)
Battery Life:
Approximately 18 hours (when tuner is operating with alkaline batteries, Strobe mode on, and A4 continuous input)
Dimensions:
2.40" (W) x 2.56" (D) x 0.87" (H)
Weight:
2.36 oz. (including batteries)
Included Items:
Two AAA batteries for verifying operation