Crystal Hollow Richard Mille RM 38-02 Tourbillon Watch. The size of 41mm x 50mm, the transparent crystal case, can admire the complex movement inside 360 degrees. The hollow bridge on the dial has a pink “V” shape, which was inspired by Bubba Watson’s golf club head. This watch is equipped with a black rubber strap, sapphire glass and 50 meters of water resistance. This watch perfectly combines design and technology