Seiko Cal. 6637 - 396

The Seiko 6637-396 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-c60949169714]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1989

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