Seiko Cal. 6631 - 673

Seiko 6631-673

The 6631-673 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6631 caliber with 27j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-e387778ef385]

Also known as: Monster

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
12.5mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Burgundy
Jewels
27j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1999

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seikata-wm-e387778ef385