Seiko Cal. 3847 - 717

This Spring Drive model from 1981 features a 44mm Titanium case. With its 18mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-46400c66aafd]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1981

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