Seiko Epson YM62A

Quartz chronograph and alarm movement with a central 1/5-second chronograph hand, small running seconds at 9 o’clock, a 60-minute chronograph counter at 12 o’clock and alarm hour/minute hands at 6 o’clock. It also has a rapidly corrected date calendar. Casing diameter is 27.0 mm and height including battery is 3.70 mm. Uses SR927W, with approximately three years of battery life under the specified chronograph/alarm duty cycle and ±20 seconds per month.