I don't know how to use it, but the watch has probably stopped and isn't working. I recommend this for those who are familiar with watches. ◆Purchase Location◆ The product can be purchased at brand shops, pawn shops, and other stores that handle brand-name goods. Size (excluding crown) Width: 3.5cm Case face (watch face): Normal Crystal (glass surface): Normal Back cover: Normal Band (belt): Normal Wrist size: 16.5cm, spring-type expansion (Accessories) Watch only Please note that the stand is not included. 698R717063316204400