The Rado True Square Automatic Open Heart R27073012 features a 38.0 mm high-tech ceramic case with a thickness of 9.7 mm. It is powered by the automatic Caliber R734 movement, offering an 80-hour power reserve. The watch showcases a white open-heart dial with Super-LumiNova® details and is protected by a sapphire crystal with anti-reflective coating. The bracelet is made of high-tech ceramic with a titanium 3-fold clasp. Water resistance is rated at 5 bar (50 meters). Reference number: R27073012.