Seiko Cal. 6638 - 531

Seiko 6638-531

This Quartz model from 1990 features a 38mm Gold-Plated case. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-d1f898384d47]

Also known as: World Timer

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
12.0mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Black
Jewels
32j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1990

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