[Glashütte Original Watches] Strive for perfect interpretation as follows: 1. In terms of case sleeve: Swiss grade precision polishing, case shape curvature Crescent position, shape and texture are invincible The perfect curved pot lid sapphire three-dimensional raised mirror surface, coupled with truly transparent coating, makes it more fresh and transparent, and the multiple sets of combined shells are rigorous, exquisite and fine 3 degrees strong waterproof