Seiko Cal. 3861 - 536

This Spring Drive model from 1965 features a 40mm Two-Tone case. With its 18mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-a0e9b1e17981]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1965

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