Omega 684

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

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  24 jewels, automatic wind, date.
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  Size: 17.50 mm.
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  H: = 5.05 mm.
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  N: = 21.600 A/h.
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  Power reserve: 40 h.

Versions: 19.800 A/h.

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  620: manual wind, 1962
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  630: manual wind, sweep second, 1962
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  670: 17 jewels, automatic wind, 1963
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  671: 24 jewels, automatic wind, 1963
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  672: 24 jewels, automatic wind, chronometer with or without sweep second, 1968
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  680: 17 jewels, automatic wind, date, 1963
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  681: 24 jewels, automatic wind, date, 1963
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  682: 24 jewels, automatic wind, date, chronometer with or without sweep second, 1968

Versions: 21.600 A/h.

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  625: 17 jewels, manual wind, 1974
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  635: 17 jewels, manual wind, sweep second, 1974
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  683: 17 jewels, automatic wind, date, 1971
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  684: 24 jewels, automatic wind, date, 1971
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  685: 24 jewels, automatic wind, date, chronometer, 1971