Authentic Hamilton Khaki Aviation X-Wind Auto Chrono Men's Watch Model H77616533. Polished Brushed Stainless Steel case, Brown Crocodile Leather strap with Tang clasp. Black dial. Automatic Self Winding movement. Scratch Resistant Sapphire crystal. Case size 44mm. Water resistant to 100 meters / 330 feet. Includes a 2 year WatchMaxx warranty.