When you pluck the string that you want to tune, an LED lights to indicate the position of the peg that you should turn. Then simply tune while you watch the LED meter that indicates whether the pitch is sharp or flat. When the tuning is correct, the upper and lower LEDs blink briefly, making it obvious that your tuning is perfect. You can adjust the angle of the display to your preference.

Scale

12-note equal temperament (A4=440Hz)

Range (sine wave)

G3 (196.00Hz) ~ A6 (1760.00Hz)
compatible with standard G, C, E and A tuning

Precision

+/- 1 cent

Power Supply

CR2032 lithium battery x 1

Battery Life

Approximately 100 hours (A4 input)

Dimensions (W x D x H)

43 mm x 29 mm x 24 mm / 1.69″ x 1.14″ x 0.94″

Weight

13 g / 0.46 oz. (including battery)

Included Items

One CR2032 lithium battery for verifying operation