Seiko Cal. 6663 - 337

Seiko 6663-337

The Seiko 6663-337 represents an important milestone in Seiko's 1999 lineup. Powered by the 6663 caliber with 29j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-ca69b64c261c]

Also known as: Bullhead, Helmet

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
12.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1999

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seikata-wm-ca69b64c261c