Irregular heart rhythm notification 4 4 3 12 7• Not all features will be available if the Apple Watch is set up through Family Setup | Apple Watch Series 6, Apple Watch SE, and Apple Watch Series 3 require an iPhone 6s or later with iOS 14 or later |
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Wireless service plan required for cellular service | International roaming is not supported |
High and low heart rate notifications• Irregular rhythm notification requires the latest version of watchOS and iOS | See for additional setup instructions |
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Blood Oxygen app 2 2 1 6 10 5• Some features, applications, and services may not be available in all regions or all languages | Connection may vary based on network availability |