Seiko Cal. 5640 - 471

The Seiko 5640-471 represents an important milestone in Seiko's 1969 lineup. Powered by the 5640 caliber with 22j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-dde5edc10d60]

Also known as: Pogue

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1969

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