TAG Heuer Watch Connected Calibre E4 Porsche Edition SBR8A82.EB0264. The TAG Heuer Connected Calibre E4. Porsche Edition offers a striking frozen blue look inspired by the Taycan and advanced controls for Porsche owners. The watch follows the launch of the TAG Heuer x Porsche Carrera Chronograph, which celebrated the two companies rich history of motor racing heritage and the launch of a global partnership in 2021. Since 2015, TAG Heuer has been an unmissable player in the luxury smartwatches category, and the TAG Heuer Connected Calibre E4 - Porsche Edition offers Porsche owners and fans access to TAG Heuers ever-growing ecosystem of exclusive sports, wellness apps and elegant watch faces.