The ALT1-C Anthracite remains true to each of the technical principles behind any revered automatic timepiece. Integrating an impeccably modified, chronometer-rated Valjoux 7750-SO BI AC movement, the ALT1-C Anthracite brings together art of watch making with the very best of technical innovation, precision and durability. We are passionate about aviation and we take inspiration from all aspects of its magnificent heritage. Our pilots' watches form the core of our collection and are lovingly engineered to be functional with finesse, whether in the hangar or heading for the clouds.Black leather strap.