Specifications

Cal.	V131 / V145 / V147 / V157 / V158
1. Features	3 hands (hours, minutes, seconds), date display (excluding V131)
2. Frequency of crystal oscillator	32,768 Hz (Hz= Hertz, cycles per second)
3. Loss/gain (Monthly rate)	Monthly average loss/gain ± 15 seconds Only if worn on the wrist in a temperature range of 5°C to 35°C
4. Operational temperature range	-10 °C ~ +60 °C
5. Driving system	Step Motor, 3 pieces
6. Power source	Secondary battery, 1 piece
7. Duration	V131/V145: approx. 6 months V147/V157/V158: approx. 10 months
8. IC (Integrated Circuit)	Oscillator, frequency divider and driving circuit C-MOSIC, 1 piece

The specifications are subject to change without prior notice due to product improvements.