THE ALL-TERRAIN EMILE-CHOURIET CHALLENGER-CLIFF BLACK-PVD WATCH Built for adventure but fashioned as an intriguing daily companion, the Emile-Chouriet Challenger-Cliff Black-PVD Watch is tailored for those who choose to live out their passions during the precious moments they dedicate entirely to themselves.  Built to withstand extreme conditions while stylish for everyday wear, the revamped Challenger Cliff