Seiko Epson YM92A

Epson YM92A is a battery-powered analog quartz chronograph with central chronograph seconds, small running seconds at 9 o’clock, combined 12-hour/minute chronograph display at 6 o’clock and a 1/20-second counter at 12 o’clock. Its outline is 27.60 mm by 24.00 mm, with a 27.00 mm casing diameter; height including battery is 3.70 mm. The 32,768 Hz oscillator is not a mechanical beat rate. The SR927SW battery is rated for approximately three years with two hours of daily chronograph operation.