Seiko Cal. 5641 - 667

Seiko 5641-667

The 5641-667 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5641 caliber with 22j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-694342ef4a30]

Also known as: Helmet, Navigator

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
11.7mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
60m
Dial Color
White
Jewels
22j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1979

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seikata-wm-694342ef4a30