zf factory watches 5015c-1130-52b fifty fathoms 45mm stainless steel cal.1315 autoamtic mens watch sapphire bezel black dial canvas strap sp, Slivery;brown

super luminous, generous case design, elegant sapphire bezel, the originator of diving. [technical difficulties] the sapphire bezel is the most valuable part of the watch. the hardness of the sapphire is equivalent, but it is brittle and weird. it is very difficult to handle. to achieve the original aura and thin and powerful effect, the yield can only be controlled at 3 to around 5 floors. [essence] the domineering side leakage case is very exquisite in workmanship, and every polishing or drawing process has been patiently processed by the zf watchmaker.