Seiko Cal. 6639 - 744

Seiko 6639-744

The 6639-744 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6639 caliber with 32j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-27420b0b8947]

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
44mm
Case Thickness
15.7mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Cream
Jewels
32j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1966

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seikata-wm-27420b0b8947