Also Present over the dial and hands is Rolex’s Chromalight lume. This more recent in-house substance was to start with introduced in 2008 as Rolex’s proprietary luminescent compound and since its introduction, it's totally replaced Super-LumiNova within the model’s lineup. There is a wonderfully unique double index at 12 o’clock https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/