Seiko Cal. 4551 - 520

The Seiko 4551-520 represents an important milestone in Seiko's 1968 lineup. Powered by the 4551 caliber with 22j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-53cc4fd75981]

Also known as: Bullhead, UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1968

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