Seiko Cal. 6646 - 331

Seiko 6646-331

The 6646-331 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6646 caliber with 33j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-9f006fe4ab5f]

Also known as: Samurai, Silverwave

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
43mm
Case Thickness
9.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
50m
Dial Color
Green
Jewels
33j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1988

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