Seiko Cal. 5631 - 602

This Spring Drive model from 1999 features a 34mm PVD Black case. Powered by the 5631 caliber with 18j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-81b9aed882cf]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1999

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