Seiko Cal. 3811 - 337

This Spring Drive model from 1966 features a 39mm PVD Black case. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-8b6d3a334fab]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1966

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