Seiko Cal. 6636 - 842

This Spring Drive model from 1988 features a 34mm Two-Tone case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-fd86f41a3e58]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1988

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