Seiko Cal. 6636 - 762

This Spring Drive model from 1973 features a 43mm Titanium case. With its 21mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-f5cc7d510b7d]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1973

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