This Richard Mille RM 055 Bubba Waston is a manual winding watch which was designed to celebrate the career of Golfing Legend Bubba Watson. The case is crafted from white ceramic and TZP titanium. The Tonneau shaped watch case is 49.90 x 42.70 mm in dimension and has a layered Tetragonal Zirconia Polycrystal ceramic which has an eye catching pattern and is tough as steel. The curved sapphire crystal on the front and back reveal the Calibre RMUL2 manual winding movement appearing as if almost suspended in air. This durable movement is capable of handing stresses of over 9000 times the force of gravity, equivalent to the force created in Bubba Watson's swing. It also features the variable inertia balance wheel adjusting the self winding mechanism to fit the activity level of the wearer. The watch is complemented with a white rubber bracelet and double fold over titanium deployment buckle. It has a 55 hour power reserve and is water resistant up to 3 ATM.