This is mechanical watch,not Quartz Watch,So plearse wear your watch at least 8 hours a day to maximize power reserve.
1. This is a mechanical watch. When you first use it, you have to shake it or wind it manually.
2. If you do not use it for many days, the watch will stop working, but not mean it can not working. Please wind the watch or shake it, it will work again.
3. Please keep the watch away from magnet to avoid making the watch stop working.
100% New and High Quality.
Movement: Automatic mechanical movement
Case Material: Stainless Steel
Case Diameter: 39mm
Dial Thickness: 13 mm
Band Material: Stainless Steel
Band Length (include Case): 220mm
Band Width: 20mm