Seiko Cal. 3854 - 401

This Spring Drive model from 1978 features a 37mm Hardlex-Coated Steel case. With its 22mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-429546e22204]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1978

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