Seiko Cal. 6635 - 746

This Spring Drive model from 1995 features a 42mm Stainless Steel case. With its 18mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-50a4774fa47f]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1995

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