Seiko Cal. 3851 - 563

This Spring Drive model from 1965 features a 37mm Two-Tone case. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-779120fceefa]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1965

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