Seiko Cal. 5640 - 451

Seiko 5640-451

The 5640-451 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5640 caliber with 20j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-8808aecff9aa]

Also known as: Rally, Goldfeather

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
40mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
110m
Dial Color
White
Jewels
20j
Frequency
28,800 bph
Power Reserve
49 hours
Year
1984

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