Fanmis Men's Automatic Mechanical Watches Gold Stainless Steel Dial Black Leather Strap Watch The watch is powered by the motion of the wearer's wrist. If the watch is not worn for 8 or more active hours per day, it will run slower than usual or even stop briefly. 30m water resistance, protects your watch from splash and rain, convenient for your daily life, not suitable for swimming and sauna, etc. Skeleton dial design reveals your fashionable point of view. Leather strap, soft and comfortable to wear We have first-class after-sales service, please rest assured purchase, please contact us immediately if there is any quality problem, We will reply you within 24hours ,and provide a satisfactory solution. 12-Month Warranty Service .