Seiko Cal. 6644 - 734

Seiko 6644-734

The 6644-734 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6644 caliber with 27j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-e74d28a9bdf0]

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
8.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
120m
Dial Color
Silver
Jewels
27j
Frequency
36,000 bph
Power Reserve
39 hours
Year
1969

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