Kevlar inserts. H-style screws on bezel. This is the most popular of all the Big Bang wristwatches and the hardest to find. It is the winner of the 'Best Professional Sport Watch' at the 'Watch of the Year 2005' awards in Japan, and Geneva's 'Best Design' 2005 at the November 'Grand Prix dHorlogerie'. Gorgeous caseback reveals decorated Hublot movement with skeletonized and blackened rotor. Six screws secure caseback which is beautifully and sparingly engraved.Comes with original Hublot Warranty, Gorgeous Wooden Box, Cleaning Cloth and instruction manual.