Seiko Cal. 6637 - 778

Seiko 6637-778

This Solar model from 1985 features a 35mm Hardlex-Coated Steel case. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-a38fd191a745]

Also known as: Pogue, Golden Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
13.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
140m
Dial Color
Burgundy
Jewels
24j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1985

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