1. Cartier watches usually have water resistance to a certain depth, but all watches are vulnerable to water intrusion. The main cause of water entering the watch is that the waterproof seal has deteriorated due to aging, and the watch cannot be waterproof anymore.

2. When Cartier watch gets water inside, there are various methods to remove it. The most direct way is to open the case, remove the movement and blow the water out. This can be done by professionals only and must be done very carefully in order to avoid further damage.

3. Another way is to use water-absorbing silica gel. First use the vacuum cleaner to suck out the water that you can see in the case, then put the watch into the silica gel, and finally seal the bag with tape. Leave the silica gel for a few days to absorb the remaining water.

4. After getting the water out of the watch, one should find out why it happened in the first place. If the waterproof seal is broken, you need to ask professionals to replace the seal. Otherwise, it may still be vulnerable to water machines.

5. Finally, the owner should try to never let the watch get wet again, even if it is waterproof. When swimming or diving, it is recommended to take off the watch in order to avoid water entering it.