Seiko Cal. 6640 - 568

The 6640-568 is a sought-after Solar piece from Seiko's golden era. Powered by the 6640 caliber with 18j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-aa0f7f195155]

Also known as: Arnie

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1987

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