Seiko Cal. 4431 - 586

This Solar model from 1976 features a 44mm Hardlex-Coated Steel case. Powered by the 4431 caliber with 19j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-557e7c8a1e95]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1976

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