Seiko Cal. 6640 - 915

Seiko 6640-915

This Solar model from 1969 features a 35mm Two-Tone case. With its 19mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-a94e42a6bc58]

Also known as: Navigator, Sea Horse

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
35mm
Case Thickness
14.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Cream
Jewels
36j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1969

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