Seiko Cal. 6631 - 499

Seiko 6631-499

The 6631-499 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6631 caliber with 36j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-11124bfa9609]

Also known as: Monster

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
11.8mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Burgundy
Jewels
36j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1990

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seikata-wm-11124bfa9609