Seiko Cal. 6687 - 392

This Quartz model from 1977 features a 38mm Titanium case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-892ae6aff87f]

Also known as: Sumo, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1977

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