Measure your workouts, from running and cycling to new high-intensity interval training. Track and share your daily activity and get the motivation you need to hit your goals. Better manage everyday stress and monitor your heart rate more effectively. Automatically sync your favourite playlists. And stay connected to the people and information you care about most.
Apple Watch Series 3 (GPS) requires an iPhone 5s or later with iOS 11 or later.
 Compared with the previous generation.  ISO standard 22810:2010. Appropriate for shallow-water activities like swimming. Submersion below shallow depth and high-velocity water activities are not recommended.