Seiko Cal. 7013 - 587

This Spring Drive model from 1978 features a 41mm Titanium case. With its 21mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-404fa1912596]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1978

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