mechanical watch, sapphire mirror, fully automatic mechanical movement, diameter 40mm, stable running time, carbon black steel emperor,ll

swiss brand watches are suitable for running, sports, dating, new year, christmas, birthday, business activities and other major places. this is a valuable gift for you and your loved ones. stable performance, exquisite technology and strict polishing of every part can effectively ensure the quality of the material. the surface is also polished, and the luster is excellent with ultra-precision automatic movement function, without battery, powered by the natural movement of the arm. the spring rotates about 30 times, which can provide powerful power for the watch..syi