Seiko Cal. 4487 - 674

The Seiko 4487-674 represents an important milestone in Seiko's 1980 lineup. With its 18mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-95495b853ae6]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1980

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