⌚Multi Function Automatic Watch : Three-dimensional scale layered dial classic tourbillon watches design multi-function dial design month/week/calendar window matching stylish and practical. ⌚Imported Movement: Automatic watch no battery imported mechanical movementproper manual winding can effectively reduce time deviation energy reserve more than 45 hours. (Note: For the first use please manually rotate the crown clockwise for 30-45 turns. Automatic winding men watch usually winds automatically by the shaking of the arm. If you do not wear it for a long time you need to wind it manually when you use it again) ⌚High Hardness Material: Stainless steel strap hidden butterfly buckle comfortable to wear and easy to adjust. And the mirror surface is made of high-strength mineral glass which has an anti-scratch effect.(Men's wrist watches strap length is 20CM/7.87 inches if the strap is not long enough after purchase you can contact the seller the seller will provide the strap link for free) ⌚Luminous Waterproof Watches: OLEVS watch luminous watches use a new generation of luminous materials smeared on the hands and dials the luminescence is more durable. And with a 30-meter waterproof function it is suitable for daily waterproofing and can withstand hand washing and rain. ⌚OLEVS Automatic Watch for Men: We offer a five-year warranty for automatic watches. If you encounter problems when using the watch you can contact us and a professional after-sales service team. Will provide you with services.