Seiko Cal. 6635 - 691

This Hand-Winding model from 1966 features a 45mm Titanium case. With its 19mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-ada4abffc9b6]

Also known as: Shogun, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1966

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