OMEGA cal: 620 - 630

• 620:   17.50 mm, 17 jewels, 19.800 A/h, manual wind.
  
• 630:   17.50 mm, 17 jewels, 19.800 A/h, manual wind, sweep second.

• 625:   17.50 mm, 17 jewels, 21.600 A/h, manual wind.
• 635:   17.50 mm, 17 jewels, 21.600 A/h, manual wind, sweep second.

• 640:   12.40 mm, 17 jewels, 19.800 A/h, manual wind, backwinding.
• 650:   12.40 mm, 17 jewels, 19.800 A/h, manual wind.

Automatic wind:

• 660:   15.40 mm, 17 jewels, 19.800 A/h, automatic wind.
• 661:   15.40 mm, 24 jewels, 19.800 A/h, automatic wind.
• 662:   15.00 mm, 17 jewels, 21.600 A/h, automatic wind.
• 663:   15.00 mm, 24 jewels, 21.600 A/h, automatic wind.

• 670:   18.00 mm, 17 jewels, 19.800 A/h, automatic wind.
• 671:   18.00 mm, 24 jewels, 19.800 A/h, automatic wind.
• 672:   18.00 mm, 24 jewels, 19.800 A/h, automatic wind, chronometer.
• 680:   18.00 mm, 17 jewels, 19.800 A/h, automatic wind, date.
• 681:   18.00 mm, 24 jewels, 19.800 A/h, automatic wind, date.
• 682:   18.00 mm, 24 jewels, 19.800 A/h, automatic wind, chronometer, date.
• 683:   17.50 mm, 17 jewels, 21.600 A/h, automatic wind, date.
• 684:   17.50 mm, 24 jewels, 21.600 A/h, automatic wind, date.
• 685:   17.50 mm, 24 jewels, 21.600 A/h, automatic wind, chronometer, date.