Power source: Button battery CR2032(3V)1 Piece

Automatic power off: Power is cut off after the unit is left  unattended for about 3 minutes

Display: LCD display with backlight

Tuning mode: Chromatic  mode.

Sound detection: Built-in microphone

Measuring range: C1(32.7Hz)~C8(4186.0Hz)

Measurement accuracy: 土1cent

Calibration range: A4=440Hz

Dimensions tuner body: 68mm（W）x 32mm（H）x 12mm (D)

Weight : Approx.20g including battery