Seiko Cal. 6637 - 808

This Spring Drive model from 1995 features a 37mm Two-Tone case. It features a Black dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-0e7359fefab6]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1995

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