Seiko Cal. 5633 - 984

This Spring Drive model from 1981 features a 41mm Stainless Steel case. With its 19mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-8a2e2570b837]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

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