Seiko Cal. 7151 - 657

This Spring Drive model from 1968 features a 43mm Titanium case. With its 22mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-90d2ec28f01d]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1968

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