Seiko Cal. 6637 - 513

Seiko 6637-513

This Quartz model from 1966 features a 41mm Hardlex-Coated Steel case. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-614c85f60d8c]

Also known as: Sportsmatic

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
9.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1966

Related Models

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