Seiko Cal. 6640 - 773

The 6640-773 is a sought-after Solar piece from Seiko's golden era. Powered by the 6640 caliber with 19j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-3152818b92e7]

Also known as: Goldfeather

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1986

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