A:Answer Hi Lori,
Thank you for bringing this to our attention. I appreciate your inquiry about whether the Galaxy Watch 4 is waterproof or not. In line with this, the watch is designed to withstand dust and water, with 5ATM rating resistance, which means submersion up to 50 meters per ISO standard 22810:2010.
Please see its user manual on Page 24, 74, and 75 for further details:
https://downloadcenter.samsung.com/content/UM/202109/20210929010214001/WEA_R89X_R88X_R87X_R86X_EN_UM_071621_FINAL_AC.pdf
You may also visit this link for more water resistance tips:
https://www.samsung.com/us/support/answer/ANS00078031/
Use Water lock mode for swimming with your smart watch:
https://www.samsung.com/us/support/answer/ANS00078058/
Should you need more assistance, you may reach us via the following for immediate support:
1. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
2. Facebook Messenger: http://m.me/samsungsupport
3. Twitter: https://twitter.com/messages/compose?recepient_ id=18768513
Reference Number: 1144229049
Thank you for choosing Samsung. Have a great day!
^Chrystel