Seiko Cal. 5640 - 466

The 5640-466 is a sought-after Solar piece from Seiko's golden era. Powered by the 5640 caliber with 19j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-507020b37398]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1977

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