Seiko Cal. 3828 - 981

This Spring Drive model from 1968 features a 43mm Stainless Steel case. It features a Black dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-d63678447b83]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

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