KS Navigator Men's Analog Automatic Mechanical Calender 24 hour Display Steel Wrist Watch KS224 Present by Kronen&Shne group, Navigator series Please keep the watch away from magnet to avoid making the watch stop working.Please wind up the watch before every usage Precision Movement with the latest breakthrough "Kronen&Shne" Patented Mechanical Technology Day date and 24 hours display.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.