Seiko Cal. 6638 - 355

This Quartz model from 1980 features a 44mm Titanium case. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-30404df5f217]

Also known as: Rally, World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1980

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