Seiko Cal. 6637 - 889

The Seiko 6637-889 represents an important milestone in Seiko's 1996 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-76dd247b743a]

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1996

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