Seiko Cal. 4520 - 921

The 4520-921 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-8643ec37ec65]

Also known as: Monster, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1986

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