Seiko Cal. 6664 - 690

The 6664-690 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6664 caliber with 29j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-c1cc9caa36b5]

Also known as: Bullhead, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1965

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