Seiko Cal. 6681 - 160

This Spring Drive model from 1983 features a 43mm Stainless Steel case. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-7e39b0f8154f]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1983

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