The case is 41 mm in diameter, water-resistant to 100 meters, and features brushed and polished surfaces and a thin, polished bezel. The curved, scratch-resistant sapphire crystal is treated with nonreflective coating on both sides; another sapphire window in the caseback displays Calibre 8, an automatic movement with 42-hour power reserve, rapid date correction function, and a rotor decorated with côtes de Genève. The TAG Heuer Calibre 8 movement — which consists of an ETA 2892-A2 base and a Soprod TT651 module that powers both the big date and GMT displays — is also a COSC-certified chronometer.
Six versions of the TAG Heuer Carrera Calibre 8 Grande Date GMT are available, all pictured below: dial options are black, silver and anthracite (the later two have a sunray pattern), each paired with either a matching-color alligator leather strap (except the silver dial, paired with a brown strap) or with the so-called Grand Carrera stainless steel bracelet, with three rows of links bearing alternating polished and brush-finished surfaces. The dials all have polished, hand-applied faceted indices and polished hour and minute hands, all with luminescent material, as well as a hand-applied TAG Heuer “shield” logo at 3 o’clock.
![TAG Heuer Carrera Calibre 8 Grande Date GMT - black dial/bracelet](http://www.watchtime.com/cms/wp-content/uploads/2013/07/TAG-HEUER-CARRERA-CALIBRE-8-GMT_blackdial_steel_560.jpg)
![TAG Heuer Carrera Calibre 8 Grande Date GMT - silver dial/strap](http://www.watchtime.com/cms/wp-content/uploads/2013/07/TAG-HEUER-CARRERA-CALIBRE-8-GMT-silverdial_strap_560.jpg)
![TAG Heuer Carrera Calibre 8 Grande Date GMT - silver dial/bracelet](http://www.watchtime.com/cms/wp-content/uploads/2013/07/TAG-HEUER-CARRERA-CALIBRE-8-GMT-silverdial_bracelet_560.jpg)
![TAG Heuer Carrera Calibre 8 Grande Date GMT - anthracite dial/strap](http://www.watchtime.com/cms/wp-content/uploads/2013/07/TAG-HEUER-CARRERA-CALIBRE-8-GMT-graydial_strap_560.jpg)
![TAG Heuer Carrera Calibre 8 Grande Date GMT - anthracite dial/bracelet](http://www.watchtime.com/cms/wp-content/uploads/2013/07/TAG-HEUER-CARRERA-CALIBRE-8-GMT-graydial_bracelet_560.jpg)