Seiko Cal. 4550 - 255

The Seiko 4550-255 represents an important milestone in Seiko's 1990 lineup. With its 19mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-ba305b3c96d6]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1990

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