KS Royal Carving Men's Black Leather Band Automatic Mechanical Skeleton Waterproof Sport Watch KS035 Designed by renowned German Watch Maker "Mr. Ludwig van der Waals". It is another amazing design from his designing team. Precise Movement with the latest breakthrough "Kronen&Shne" Patented Mechanical Technology. Specially designed Stainless Steel Case with High Quality Leather Watch Band.Composed with Tiny Equipment Composing Technology from KS watch manufacturing. Water resistant up to 3 ATM (Not suitable for swimming, diving, shower etc.) Please note this is a MECHANICAL WATCH which will stop working if you are not moving for a long time. Please wind up the watch before EVERY USAGE, and keep the watch away from magnets to ensure the watch keeps working. For detail instructions of the watch, you can access our Kronen & Shne official website to download. If any questions, dont hesitate to contact us.