Seiko Cal. 6631 - 726

Seiko 6631-726

The 6631-726 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6631 caliber with 31j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-85187491dff4]

Also known as: Rally

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
9.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
70m
Dial Color
Green
Jewels
31j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1972

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seikata-wm-85187491dff4