Seiko Cal. 3810 - 904

This Spring Drive model from 1971 features a 44mm Titanium case. With its 22mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-d4249f0c53e2]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

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