Seiko Cal. 6637 - 187

The Seiko 6637-187 represents an important milestone in Seiko's 1985 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-751441a1153d]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1985

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