...and I can't help but wonder if over the decades since that "plastic" Tissot movement was made some progress has been made in the hardness of plastics or plastic-type materials that would make watch parts less prone to wear? We know that "Kevlar" is a Dupont-discovered chemistry-based material from which bullet-proof vests and other force-resistant products are made. It seems that perhaps a watch movement could be make from Kevlar that would stand up to wear as dependably as metal. I'm not a chemist or metallurgist but with all of the progress in both fields since the 1960's-70's it seems that some material other than metal could be used that would be wear resistant and very light weight.
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