The Rado True Square Automatic Open Heart, reference R27086152, features a 38.0 mm high-tech ceramic case with a thickness of 9.7 mm. It is powered by the automatic R734 movement, offering an 80-hour power reserve and tested in five positions for accuracy. The watch includes a titanium/PVD case back and a high-tech ceramic crown. The black high-tech ceramic bracelet is secured with a three-fold titanium clasp. Super-LumiNova® details enhance the hands for improved visibility. The balance wheel incorporates an antimagnetic Nivachron™ hairspring. The watch weighs 120 grams.