Seiko Cal. 6638 - 939

Seiko 6638-939

The 6638-939 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6638 caliber with 19j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-b26838d29ac9]

Also known as: Emperor

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
11.4mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
19j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1972

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seikata-wm-b26838d29ac9