Seiko Cal. 5630 - 637

This Spring Drive model from 1973 features a 35mm Hardlex-Coated Steel case. With its 21mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-35afd4d558bc]

Also known as: Shogun, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1973

Related Models

• Seiko 6250-329
• Seiko 5215-611
• Seiko 5666-981
• Seiko 0779-574
• Seiko 6310-529
• Seiko 7143-610
• Seiko 7021-741
• Seiko 4496-514
• Seiko 6332-414
• Seiko 7139-123
• Seiko 7180-490
• Seiko 0799-927