The Zeblaze GTR 3 Pro has IP68 certification, which means that it is protected against dust and can withstand permanent immersion in water up to a depth of 1.5 metres for up to 30 minutes. However, it should be noted that IP68 has not been tested specifically for activities such as swimming. For more intensive water sports or prolonged swimming, a smartwatch with a 5 ATM or higher water resistance rating is recommended.