Seiko Cal. 6634 - 637

Seiko 6634-637

The 6634-637 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a8c235b0d774]

Also known as: Goldfeather

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
40mm
Case Thickness
15.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
120m
Dial Color
Champagne
Jewels
25j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1977

Related Models

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