Seiko Cal. 6631 - 826

The Seiko 6631-826 represents an important milestone in Seiko's 1973 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-04030e2676ce]

Also known as: Rally

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1973

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