Apple Watch buyers now have a wider range of devices to choose from. The entry-level is the Apple Watch Series 1 which brings basic tracking and iPhone connectivity without water resistance, a GPS or cellular connectivity. A Series 3 GPS version brings all the features and performance of the latest, greatest but without the cellular connectivity.
Apple Watch Series 3 has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. However, it should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth.
If your Apple Watch is unable to connect either via Bluetooth or Wi-Fi, it again still offers some - although fewer - features. Features that are available in each case are detailed here: How to use your Apple Watch without your iPhone nearby - Apple Support. Instructions for listening to music on Apple Watch are detailed here:
A compatible Wi-Fi network is an 802.11b/g/n 2.4GHz Wi-Fi network that your iPhone has connected to before whilst your Apple Watch was connected to the iPhone via Bluetooth. Apple Watch cannot connect to 5GHz Wi-Fi networks or to public networks that require logins, subscriptions or profiles. To check whether your Apple Watch can connect to Wi-Fi:
Cupertino, California — Apple today introduced Apple Watch Series 3, adding built-in cellular to the world's number one watch.Whether users are out for a run, at the pool or just trying to be more active throughout their day, Apple Watch Series 3 with cellular allows them to stay connected, make calls, receive texts and more, even without iPhone nearby.