Richard Mille Replica's strongest replica RM055 series! The top and bottom case of ceramics imported from Taiwan is Y-TZP ceramics after being treated by ATPT ceramics. After high-tech anti-fingerprint technology, the Y-TZP ceramics show delicate and soft sub-black material. The color and luster of the ceramics are more meticulous after 100 years'constant matte gloss. The upper and lower case of ceramics with infinite approximation to the authentic one is treated by visual pattern plating. Reflective Refractive Coated Sapphire Glass!