Seiko Cal. 6663 - 618

This Solar model from 1968 features a 46mm Stainless Steel case. Powered by the 6663 caliber with 20j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-83a8ba2cfd5d]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1968

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