Seiko Cal. 6637 - 687

The Seiko 6637-687 represents an important milestone in Seiko's 1994 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-f8ac5cebeb79]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1994

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