Seiko Cal. 6631 - 839

The Seiko 6631-839 represents an important milestone in Seiko's 1994 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-d327ea1fd4c0]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1994

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