CERTINA cal: 25-011 to 28-451

Base caliber ETA 21.600 A/h.
  • 25-011:   automatic wind, sweep second, date, base: ETA 2783
  • 25-02:     manual wind, sweep second, base: ETA 2750
  • 25-021:   manual wind, sweep second, date, base: ETA 2752

Certina calibers:

  • 25-35:    manual wind, sweep second, 18.000 A/h.
  • 25-36:    manual wind, sweep second, 19.800 A/h.
  • 25-45:    11.5''' automatic wind, sweep second, 18.000 A/h.
  • 25-451:  11.5''' automatic wind, sweep second, date, 18.000 A/h.
  • 28-45:    12.5''' automatic wind, sweep second, 18.000 A/h.
  • 28-451:  12.5''' automatic wind, sweep second, date, 18.000 A/h.