Seiko Cal. 6631 - 411

The Seiko 6631-411 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-7b13bba39952]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1985

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