Seiko Cal. 4491 - 582

This Hand-Winding model from 1974 features a 41mm Hardlex-Coated Steel case. Powered by the 4491 caliber with 19j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-b2584fe34fe0]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1974

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