Seiko Cal. 6634 - 987

Seiko 6634-987

The 6634-987 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-4d4bf9d2cfbe]

Also known as: Sumo, Goldfeather

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
14.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Green
Jewels
29j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1973

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