Seiko Cal. 6637 - 662

The Seiko 6637-662 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-2f03ac437c55]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1987

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