Seiko Cal. 6639 - 181

Seiko 6639-181

The 6639-181 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6639 caliber with 35j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-19b2b87b6ba7]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
38mm
Case Thickness
15.2mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
140m
Dial Color
White
Jewels
35j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1966

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seikata-wm-19b2b87b6ba7