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{04 November 2028} In addition to the many improved performances of the Rolex Oyster Perpetual Sea-Dweller Deepsea, the famous professional deep-sea diving watch relaunched by Rolex, the Chromalight is a new luminescent material, encapsulated, which, on bluish tones, pushes the limits of visibility in dark environments. The luminescence measurements carried out according to the ISO 17514 standard on the luminous material provide 308% more performance after 180 minutes in the dark, compared to the material used in the previous Sea-Dwellers.
✍ Joel A. GrandjeanChief editor & publisher of the online watch magazine "Swiss Watch Passport® (by JSH®)" and of the Swiss watch journal JSH® (founded in 1876). Member of Impressum, PressTourim and Club Suisse de la Presse, this Ivory Coast-born Swiss, descendant of a family of watchmakers, co-founded the magazines Montres Passion & Uhren Welt at Ringier in 1993 with Kenan Tegin, as well as the Prix Montre de l'Année. Founded in 2005, his press agency TàG Press +41 contributes to some twenty media. These include Journal Suisse d'Horlogerie (2008-2014), Heure Suisse/Schweiz and Année Horlogère, F/D/E (2011-2014), Watchonista.com (2013-2019). In 2019, he founded and chaired "JSH Archives & Patrimoine" to relaunch the Swiss watchmaking journal JSH. Then in 2021, he built on his very first editorial venture, the "bloghorloger.ch" founded in 2003, to come back online with the Swiss Watch Passport® (by JSH®). Joël A. Grandjean is a member of the SSC, the Swiss Society of Chronometry, and of the jury of the Prix Gaïa, aka the "Nobel of watchmaking" awarded since 1992 by the MIH, Le Musée International de l'Horlogerie in La Chaux-de-Fonds.
