However, the core of Carrera Calibre 16 is just daily wear, beautifully designed, powered by the main Swiss ETA Valjoux 7750 automatic chronograph movement. Interestingly, this particular design does not apply to the homemade TAG Heuer 1887 movement, as it was a few years ago. Conversely, if you wish to use a slightly larger version of this watch in a 43 mm wide case, you can choose the TAG Heuer Carrera Caliber 16 DD (for example, reference number CV2A1V.BA0738). It has a surprisingly similar design, but with some notable changes, including a larger 43mm wide (compared to 41mm wide) case, a "classic" minute dial and a day of the week window next to the date window. It also has the same Valjoux 7750 self-winding movement.