Seiko Cal. 4521 - 216

This Spring Drive model from 1967 features a 39mm PVD Black case. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-78e95f2f8a16]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1967

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