Seiko Cal. 3871 - 252

This Spring Drive model from 1966 features a 42mm PVD Black case. With its 19mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-e22f5a90fc5f]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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