Seiko Cal. 3817 - 669

This Spring Drive model from 1970 features a 40mm Hardlex-Coated Steel case. With its 18mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-8db48334f67c]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1970

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