Tag heuer watch carrera calibre 16 senna special edition marking ayrton sennas return to the tag heuer watch company the new chronograph dressed in an all black shroud with striking red accents running through a set of highly refined mechanical features illustrates the epitome of motor racing featuring the stylized s lettering for senna in a brilliant red the timepiece is given a real racing spirit fused with elements of dynamic sporty design the redesigned chronograph with three sub dials