Seiko Cal. 5675 - 663

This Spring Drive model from 1977 features a 45mm Stainless Steel case. With its 20mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-83c18e40d6bc]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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