Seiko Cal. 3853 - 143

This Spring Drive model from 1973 features a 38mm Titanium case. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-3be2ab2b0ca1]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1973

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