Roger Dubuis Excalibur Spider Double Flying Tourbillon watch features a 47mm black DLC titanium skeleton case and titanium bezel with a red aluminum container and crown housing the double flying tourbillon cages built to resemble Celtic crosses. The astral design of the charcoal rhodium-coated openworked flange also shows off a 50-hour power reserve. Comes on a black rubber strap with a deployant buckle.