Seiko Cal. 4550 - 890

The Seiko 4550-890 represents an important milestone in Seiko's 1979 lineup. With its 19mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-99acca87761c]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1979

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