A:Answer The vívoactive HR must be connected to your phone via Bluetooth to receive Smart Notifications. The range may vary based on the environment (walls, electronics being used, etc), but you should maintain Bluetooth connection for up to 10 meters (30 feet). You can only read and dismiss the notifications from your watch and cannot respond to texts. Lastly, the vívoactive HR does not monitor heart rate when swimming, but does provide detailed stats such as total and interval distance, pace, stroke count, stroke type and more. (KS)