Seiko Cal. 6640 - 565

The 6640-565 is a sought-after Solar piece from Seiko's golden era. Powered by the 6640 caliber with 34j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-6cbadd2095f3]

Also known as: Rally

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1986

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