Seiko Cal. 6631 - 298

This Spring Drive model from 1991 features a 42mm PVD Black case. Powered by the 6631 caliber with 29j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-2acca59f9412]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1991

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