Seiko Cal. 6637 - 526

This Automatic model from 1983 features a 41mm Stainless Steel case. With its 22mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-374e958aca9a]

Also known as: Samurai, Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1983

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