Seiko Cal. 0728 - 286

This Spring Drive model from 1978 features a 36mm Titanium case. With its 22mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-d05d196381cf]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1978

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