Seiko Cal. 4550 - 506

The Seiko 4550-506 represents an important milestone in Seiko's 1990 lineup. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-df7ac383b0ab]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1990

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