KS Royal Carving Men's Analog Mechanical Auto Skeleton Dial Leather Band Wrist Watch Present by Kronen&Shne group, Royal carving series Precision Movement with the latest breakthrough "Kronen&Shne" Patented Mechanical Technology Skeleton style dial, with crown on 12 o&acute;clock. Cal. KM02S03 automatic mechanical movement inside 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.