Seiko Cal. 5637 - 841

The Seiko 5637-841 represents an important milestone in Seiko's 1971 lineup. With its 18mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-05c5cf567d7c]

Also known as: Samurai, Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1971

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