Seiko Cal. 4531 - 180

The 4531-180 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-efb4507b8552]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1988

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