The Apple Watch Series 6 requires an iPhone 6s or later with iOS 14 or later.
*1 blood oxygen value measured in the app is not intended for medical purposes, including self-diagnosis and medical calls, and is only suitable for general fitness‑ and wellness use.
*2 ECG app and rhythm notification require the latest version of watchOS and iOS and are not intended for use by persons under 22 years of age. The ECG app is available for Apple Watch Series 4 or later. Rhythm disturbance notification is not designed for people who have already been diagnosed with Afib.
*3 ISO standard 22810:2010. Suitable for activities in shallow water such as swimming. Use in deeper water and high-speed water activities is not recommended.
*4 To use SOS, your iPhone must be nearby. If your iPhone is not nearby, your Apple Watch must be connected to a known Wi-Fi network and you must set up Wi-Fi calls.