Seiko Cal. 0723 - 531

This Spring Drive model from 1970 features a 39mm Two-Tone case. With its 22mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-1729396d38e0]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1970

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