Seiko Cal. 4437 - 180

This Spring Drive model from 1990 features a 45mm Titanium case. With its 21mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-32b540eddea6]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

Related Models

• Seiko 6379-579
• Seiko 7171-857
• Seiko 5236-457
• Seiko 7181-840
• Seiko 5246-591
• Seiko 7091-685
• Seiko 6645-346
• Seiko 7173-668
• Seiko 7055-398
• Seiko 7083-609
• Seiko 4451-827
• Seiko 7182-716