Seiko Cal. 7031 - 836

The Seiko 7031-836 represents an important milestone in Seiko's 1971 lineup. With its 22mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-132bac053225]

Also known as: Samurai, Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1971

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