Seiko Cal. 6317 - 731

Seiko 6317-731

This Quartz model from 1968 features a 42mm Two-Tone case. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-c403ac7492d3]

Also known as: Helmet, Navigator

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
42mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
80m
Dial Color
Green
Jewels
34j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1968

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