Seiko Cal. 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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