Seiko Cal. 4512 - 225

This Spring Drive model from 1973 features a 37mm PVD Black case. With its 18mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-ec88afb26f51]

Also known as: Monster, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1973

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