Seiko Cal. 6643 - 333

Seiko 6643-333

The Seiko 6643-333 represents an important milestone in Seiko's 1967 lineup. Powered by the 6643 caliber with 35j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-49739846d0d5]

Also known as: Monster, Sea Horse

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
10.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Silver
Jewels
35j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1967

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seikata-wm-49739846d0d5