Omega 684

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Technical data Omega cal: 684 (17.5 RA T1 SC PC CAL 24p)


  • 24 jewels, automatic wind, date.

  • Size: 17.50 mm.

  • H: = 5.05 mm.

  • N: = 21.600 A/h.

  • Power reserve: 40 h.


Versions: 19.800 A/h.


  • 620: manual wind, 1962

  • 630: manual wind, sweep second, 1962

  • 670: 17 jewels, automatic wind, 1963

  • 671: 24 jewels, automatic wind, 1963

  • 672: 24 jewels, automatic wind, chronometer with or without sweep second, 1968

  • 680: 17 jewels, automatic wind, date, 1963

  • 681: 24 jewels, automatic wind, date, 1963

  • 682: 24 jewels, automatic wind, date, chronometer with or without sweep second, 1968


Versions: 21.600 A/h.


  • 625: 17 jewels, manual wind, 1974

  • 635: 17 jewels, manual wind, sweep second, 1974

  • 683: 17 jewels, automatic wind, date, 1971

  • 684: 24 jewels, automatic wind, date, 1971

  • 685: 24 jewels, automatic wind, date, chronometer, 1971