Yes, the WATCH 4 series support Water resistance for freediving/5ATM water and dust resistance, the following maintenance actions are recommended after swimming:1. Do a simple cleaning with clean water (avoid using chemical cleaning agent and high-speed water flow) and then wipe clean.2. Use the automatic drainage function of the watch to drain the remaining water stains from the audio hole.3. If time and conditions permit, it is recommended that you leave your watch for more than one hour to improve your wear comfort.however, the waterproof performance of electronic products is not permanently effective, and aging may occur with the increase of use time.