Seiko Cal. 5637 - 432

This Spring Drive model from 1997 features a 37mm Hardlex-Coated Steel case. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-abca076e3b39]

Also known as: Bullhead, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1997

Related Models

• Seiko 6316-490
• Seiko 6323-899
• Seiko 6678-289
• Seiko 3846-861
• Seiko 3827-700
• Seiko 7150-765
• Seiko 3879-251
• Seiko 6311-815
• Seiko 6298-380
• Seiko 5675-473
• Seiko 0782-819
• Seiko 6164-418