The Google Pixel Watch is the first Wear OS smartwatch to feature a built-in eSIM for cellular connectivity. You don’t have to worry about physical SIM cards or insert them into your watch. Instead, all you need to do is set up an eSIM profile and activate an LTE plan for your Pixel Watch from the same carrier as your phone. This makes it easy to stay connected wherever you are without worrying about being near a Wi-Fi network.