It felt strange for a brand like TAG Heuer not to produce its own movements for a long time. That all changed when the TAG Heuer Calibre Heuer 02 was released in 2020, and for the first time, TAG Heuer had an in-house movement that could be shown to the world for its most iconic Carrera and Monaco collections. 
The TAG Heuer 02 movement features a 12-hour chronograph and date complication. It was a very smart decision for TAG Heuer to make the TAG Heuer 02 calibre for its most iconic replica watches. This innovation has allowed TAG Heuer to make great strides in its watchmaking capabilities and to compete with other established brands.
In preparation for our review, we were lucky enough to get our hands on a Carrera, model CBN2A10.BA0643. CBN2A10.BA0643, powered by TAG Heuer calibre 02. Please check out our video review if you are interested in this model.
My first impression of the movement is very impressive. Obviously, at this point, we cannot yet judge its accuracy, but we can assess its beauty and design. The black rotor and the Côtes de Genève surface of the machine initially stands out from the design. At first glance, the Calibre Heuer 02 movement is an absolute delight.
Over the next few days, we got to experience first-hand the accuracy and performance of the chronograph functions of the TAG Heuer 02 movement. The accuracy of the TAG Heuer 02 movement is excellent. I didn’t notice any signs of poor timekeeping while I was experiencing this watch in person. Its accuracy seems similar to other famous brands that cost twice as much. All TAG Heuer 02 movements are checked for compliance with the COSC certification standard, a measure of chronograph accuracy.
I’m no different than anyone else exposed to the new chronographs, and this feature will definitely get some use. The pushers make for a cleaner user experience, but I don’t see any noticeable difference in the accuracy of the chronograph compared to other similar models.