Z Richard Mille RM35-02 uses the newest and lightest carbon fiber as the material. not the old material texture has changed. Look for the exclusive fiber texture. The RM35-02 series shells all use genuine raw materials. Black carbon fiber layer. white quartz The fiber layer is interlaced at a 45-degree angle through a special processing system; the shell is light in texture and has excellent impact resistance. non-allergic and UV resistance; the integrated movement bottom plate is exquisite and delicate. paying attention to the beauty of details . with unique mechanical aesthetics; high-end powerful appearance. complex hollowed-out movement. RM35-02 series can present a kind of ultimate charm. giving people a kind of hollow-out design beauty!