Seiko Cal. 6640 - 777

Seiko 6640-777

This Quartz model from 1992 features a 38mm Hardlex-Coated Steel case. With its 21mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-2fc28f7af862]

Also known as: Navigator, Crown

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
170m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1992

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