Seiko Cal. 5636 - 641

Released in 1976, the Cal. 5636 with design code 641 was part of Seiko's domestic market collection. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-24ac21ef4270]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1976

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