Seiko Cal. 6639 - 447

Seiko 6639-447

The Seiko 6639-447 represents an important milestone in Seiko's 1967 lineup. Powered by the 6639 caliber with 35j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-e6f1c274f594]

Also known as: Monster, Arnie

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
34mm
Case Thickness
15.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
200m
Dial Color
Silver
Jewels
35j
Frequency
28,800 bph
Power Reserve
48 hours
Year
1967

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