The Super LumiNova is applied 'economical', which by the way suits the watch's design, and therefore the luminescent material isn't visible with dim light, but it is visible during the night and when your eyes have adapted to darkness. Nowadays brands shy away from displaying logos from subcontractors and suppliers, but during Squale's heyday it was considered a testament of quality. The Senator Chronometer is robust watch, and measures 42mm in diameter and is just over 12mm thick.
