Seiko Cal. 5635 - 831

This Spring Drive model from 1968 features a 40mm Gold-Plated case. With its 18mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-c4eee961d030]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1968

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