Seiko Cal. 6639 - 864

Seiko 6639-864

The 6639-864 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6639 caliber with 27j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-182c85f88a4b]

Also known as: Monster, Emperor

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1981

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