Seiko Cal. 3851 - 371

This Spring Drive model from 1965 features a 45mm Gold-Plated case. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-da798df67466]

Also known as: Tuna, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1965

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