CHROMATIC TUNER:

1.Power source:Button battery CR2032(3V)1 Piece
2.Automatic power off:Power is cut off after the unit is left  unattended for about 3 minutes
3.Display : LCD display with backlight
4.Tuning mode :Chromatic  mode.
5.Sound detection:built-in microphone
6.Measuring range:C1(32.7Hz)~C8(4186.0Hz)
7.Measurement accuracy :土1cent
8.Calibration range :A4=440Hz
9.Dimensions tuner body  :68（W）x 32（H）x 12 (D)mm
10.Weight :Approx.20g(including battery)