Seiko Cal. 5638 - 836

The Seiko 5638-836 represents an important milestone in Seiko's 1985 lineup. With its 19mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-7687251f003b]

Also known as: Rally, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1985

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