Merci, excellente revue, c'est un produit typiquement jap : (Revues & Essais)

posté par PIFPAF Page d'accueil , 27/05/19, 17:53
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» Salut!
»
» oui, le "L-gasket" est une solution élégante qui évite la valve à Helium;
» elle fut développée en 1975.
»
» Complément d'info de la part de Tokunaga-san himself:
» "Our research and development was done as the perfect He-mixed-gas diver's
» watch of the 6159 professional 600m diver's watch in 1975.
»
» We designed the diver's watch as the development target that the inner
» pressure of the watch case did not go up in high-pressure helium mixture
» gas like Rolex etc., and the development of the special quality gasket of
» the material of Improved-IIR(Isobutylene-isoprene rubber) and in the
» structure development of the watch case we used the glass gasket of L type
» and one-piece case became the conclusive factor in the He-tightness.
»
» As the result of the experiment, the penetration of helium gas is
» suppressed by about 1/100 to the conventional watch case, the inner
» pressure of the case does not turn into high pressure and the diver's watch
» of the ideal saturation diving specification which does not need "helium
» gas escape valve" is completed, and the SEIKO professional diver's watches
» lead the diver's watch world after that watch as "a diver's watch which is
» proud of the highest water- tightness and air-tightness in the world."
»
» ;-)

Merci pour l'info, ils sont fort chez Seiko... Et encore, on a pas parlé du Lumibright. :ok:

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http://www.foudroyante.com/


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