Seiko Cal. 5631 - 427

This Solar model from 1988 features a 43mm Stainless Steel case. Powered by the 5631 caliber with 34j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-bb8fcbe44533]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1988

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