Irregular rhythm notification requires the latest versions of watchOS and iOS. It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (AF).
Fall Detection updates are available on Apple Watch Series 4 and later with watchOS 8 and later.
Apple Watch Series 7 (GPS + Cellular) and Apple Watch SE (GPS + Cellular) can use a mobile data connection for Emergency SOS. To use Emergency SOS on an Apple Watch without cellular connectivity, your iPhone needs to be nearby. If your iPhone isn’t nearby, your Apple Watch needs to be connected to a known Wi-Fi network and you must set up Wi-Fi Calling.
Apple Watch Series 7, Apple Watch SE and Apple Watch Series 3 have a water resistance rating of 50 metres under ISO standard 22810:2010. This means that they may be used for shallow-water activities like swimming in a pool or ocean. However, they should not be used for scuba diving, water-skiing or other activities involving high-velocity water or submersion below shallow depth.
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