Seiko Cal. 5646 - 629

This Spring Drive model from 1968 features a 36mm Stainless Steel case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e9112bf4d446]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1968

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