Seiko Cal. 4551 - 663

Released in 1978, the Cal. 4551 with design code 663 was part of Seiko's domestic market collection. Powered by the 4551 caliber with 34j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-e92ac4684786]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1978

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