In fact, the watch with screw crown is very good, and its waterproof performance is better than that of hand-painted. Before setting the time, date or week, you must first release the crown to position IB, then pull the crown to position II, then rotate it clockwise until the correct date is displayed, and counterclockwise until the correct week is displayed.

When you do this, your watch will continue to work as usual, so you don't have to adjust the time. When the crown is pulled to position III, the time can be adjusted. Rotate clockwise or counterclockwise to set the required time. Remember to screw it back!

2. Dumet watch without thread? ：

This crown is pulled by hand, and it is also divided into three positions: I, II and III. The functions and modes represented by the three positions are the same. When adjusting the time, pull it to position II, adjust the date clockwise and counterclockwise, then pull it to position III, rotate it clockwise and counterclockwise to adjust the pointer position, and then press it back to position I..

Extended data:

Matters needing attention when you love to adjust time:

1, before you prepare to adjust the time, please pay attention: in case of a watch with a spiral crown, don't pull it hard. Please turn counterclockwise to open the locked crown first. After adjusting the time, turn it clockwise and push it into the lock to avoid water.

2. Secondly, pay attention to the restricted area of mechanical watch movement from 2 1: 00 pm to 4: 00 am. In the meantime, try not to adjust the calendar and week, or the movement will be damaged to some extent. Don't adjust the time counterclockwise between 2 1: 00-3: 00, because during this time period, the calendar gear will switch, and long-term adjustment in the opposite direction will damage the internal parts. Other time periods can be freely adjusted clockwise and counterclockwise.