Seiko Cal. 3815 - 597

This Spring Drive model from 1972 features a 37mm Titanium case. With its 22mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-b543df7eda1e]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

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