Seiko Cal. 6646 - 361

Seiko 6646-361

This Spring Drive model from 1988 features a 39mm Stainless Steel case. Powered by the 6646 caliber with 18j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-465b6e722a9f]

Also known as: Sumo, Arnie

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
14.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Navy
Jewels
18j
Frequency
36,000 bph
Power Reserve
46 hours
Year
1988

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