Seiko Cal. 3860 - 313

This Spring Drive model from 1972 features a 36mm Titanium case. With its 22mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-03f2f4cf1cf8]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1972

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