Seiko Cal. 6663 - 755

The Seiko 6663-755 represents an important milestone in Seiko's 1970 lineup. Powered by the 6663 caliber with 17j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-c21604a70a72]

Also known as: Bullhead, Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1970

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