Seiko Cal. 4520 - 172

This Spring Drive model from 1966 features a 35mm Stainless Steel case. With its 18mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-7421ce0cfdcf]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1966

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