The Tag Heuer Carrera Calibre 01 was a big release for the brand. It has a significant presence about it with a 45mm case.  The skeleton back showcases its automatic movement and gears. On the dial there is also a skeleton feature where it appears to show you the workings of the watch. The date/calendar window shows the date while still leaving visible the other dates along the wheel. There are 3 subdials for the chronograph functions, with gorgeous red detailing on the hands and dial markers. The design is complex and attention grabbing, which relates to its relationship with formula 1 racing. This watch is in great condition, with some small signs of wear on the steel of the case and bracelet. It comes with it’s original box and papers, additional links and a rubber bracelet.