Seiko Cal. 4450 - 890

The Seiko 4450-890 represents an important milestone in Seiko's 1977 lineup. With its 19mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-ed7638eeb60a]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1977

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• Seiko 4590-312