Seiko Cal. 6651 - 426

Seiko 6651-426

This Spring Drive model from 1969 features a 37mm PVD Black case. Powered by the 6651 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-ad2dd88d6116]

Also known as: Sumo, Silverwave

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
37mm
Case Thickness
8.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Black
Jewels
20j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1969

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seikata-wm-ad2dd88d6116