Seiko Cal. 6637 - 137

The Seiko 6637-137 represents an important milestone in Seiko's 1983 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-f224ad535ad1]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1983

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