Seiko Cal. 4491 - 775

This Spring Drive model from 1978 features a 43mm Stainless Steel case. With its 20mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-1e9dd6262166]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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