Omega Seamaster Waterproof Electronic
Tuning Fork	Calibre	Size (mm)	Beat	Years	Seamaster
					ƒ300Hz	MegaSonic
Gents Calendar	1250	29	300Hz	1970~78	•
	1220	29	720Hz	1973~78		•
Gents Day-Date	1260	29	300Hz	1972~78	•
	1230	29	720Hz	1973~78		•

32kHz Quartz

Calibre

Size (mm)

Years

MegaQuartz

SM Quartz

Mariner

Marine

Cermet

Dynamic

Recife

P-Type Quartz

Chronograph

Gents Standard

1315

29

1977~79

•

1342

25.6

1977~80

•

1332

R25.6

1979~82

•

•

1337

R25.6

1981~84

•

1432

25.6

1983~88

•

•

1449

25.6

1987~90

GMT

1420

23.3

1982~84

•

•

1430

23.3

1982~84

•

•

•

•

•

1441

23.3

1984~89

•

•

1438

23.3

1985

•

•

1320

R18.3

1975~79

•

•

Gents Day-Date

1310

29

1973~79

•

•

1345

25.6

1978~81

•

1425

25.6

1982~83

•

1437

25.6

1983~88

•

1435

23.3

1984~88

•

Gents Date Pointer Type

1444

23.3

1985~89

•

1445

23.3

1987~89

•

Ladies Standard

1450

R13

1983~85

•

•

1455

R13

1984~93

•

•

1460

13x15.6

1949~55

•

•

Ladies Calendar

1360

19.4

1978~81

•

1426

18.2

1984~88

•

•

•

•

1380

17.2

1981~84

•

•

•

Chronograph Day

1670

30

1988~90

1/100

1675

30

1988~90

1/10

1611

R26

1975~80

Chrono-Quartz

Chronograph Day-Date

1665

28

1986~95

Multifunction