Seiko Cal. 3812 - 835

This Spring Drive model from 1984 features a 43mm Hardlex-Coated Steel case. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-e5f9e0dcf37e]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1984

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