Seiko Cal. 6637 - 462

The Seiko 6637-462 represents an important milestone in Seiko's 1990 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-57b50e8599ad]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1990

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