"Wi-Fi only" means that the watch does not have a mobile phone or LTE connection, but can only be connected to the Internet via Wi-Fi. This means that functions such as making independent phone calls, sending text messages or mobile data connections on the move are not possible. The watch can automatically synchronise activities and data with Garmin Connect via Wi-Fi, download software updates and synchronise music content, but it is not equipped for functions that require a mobile phone connection.