Seiko Cal. 4536 - 413

This Spring Drive model from 1987 features a 45mm PVD Black case. With its 20mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-9d6df5c5b65b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1987

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