Apple Watch Series 6, Apple Watch SE, and Apple Watch Series 3 have a water resistance rating of 50 meters under ISO standard 22810:2010.Check /watch/cellular for participating wireless carriers and eligibility. Contact your service provider for more details. Wireless service plan required for cellular service. Not all features will be available if the Apple Watch is set up through Family Setup.It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (Afib). Irregular rhythm notification requires the latest version of watchOS and iOS.With the ECG app, Apple Watch is capable of generating an ECG similar to a single-lead electrocardiogram. ECG is not intended for use by people under 22 years old. The ECG app is available on Apple Watch Series 4 and later (not including Apple Watch SE) with the latest version of iOS and watchOS.Blood Oxygen app measurements are not intended for medical use, including self-diagnosis or consultation with a doctor, and are only designed for general fitness and wellness purposes.See /en-us/HT207578 for additional setup instructions. Connection may vary based on network availability.
