Seiko Cal. 6631 - 199

The Seiko 6631-199 represents an important milestone in Seiko's 1980 lineup. With its 20mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-6a5434d86c8c]

Also known as: Rally, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1980

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