As Aston Martin reconsiders its AMR-One LMP1 sports car racing project, Jaeger-LeCoultre’s new AMVOX5 World Chronograph LMP1 ($20,900) continues waving the green flag. Engineered with an easy-to-read, highly accurate chronograph paired with a world time function, the 250-piece limited edition is the latest model to emerge from the seven-year collaboration. Legibility was a priority for designers, who positioned two carbon fiber chronograph counters tracking hours and minutes at 3 and 9 o’clock, while seconds are counted off with a central hand. The dial, which evokes the air-vent grilles on the Aston Martin LMP1 prototypes, is highlighted with a Gulf Oil color scheme of orange and blue. And playing off the cars’ extreme technical features, the case is composed of robust high-tech ceramic mixed with zirconium and yttrium, which is subjected to heat and pressure to yield a material so hard that it can only be shaped with special diamond-tipped tools. (www.jaeger-lecoultre.com)