Seiko Cal. 4554 - 903

The 4554-903 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4554 caliber with 20j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-0aedf2136fa8]

Also known as: Bullhead, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1978

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