Seiko Cal. 6637 - 439

Seiko 6637-439

The 6637-439 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 21j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-d52ef3c57487]

Also known as: Emperor

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
42mm
Case Thickness
14.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
21j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1995

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seikata-wm-d52ef3c57487