Seiko Cal. 6631 - 548

Seiko 6631-548

This Hand-Winding model from 1983 features a 38mm Hardlex-Coated Steel case. With its 20mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-bd47b4512d0a]

Also known as: Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Cream
Jewels
32j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1983

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