The Carrera Heuer-01 made its debut at Baselworld in 2015 and has gone on to become TAG Heuer's signature chrono. It started out as the cornerstone of a new collection that brought with it a new design, the Heuer 01 in-house calibre, and a modular case whose 12 separate elements enable multiple combinations of materials and colours. The brand's best-selling model, it now comes in mat black ceramic: case, bezel, lugs and case middle – all the parts exposed to friction – are made in this highly resistant material. So as to guarantee water-resistance to 100 metres, the functional parts, in particular the inner box, screw-down case back and pushers, are in steel so that the gaskets can perform their function. A skeleton dial gives this Chronograph a distinctly contemporary style.