A cellular connection allows you to make calls, send texts, stream music, download apps, and do anything else that requires an internet connection—all without your phone. The cellular Apple Watch Series 10 carries a $100 premium over the base model (Bluetooth and Wi-Fi only). Then, you also have to pay for a separate data plan—most carriers charge an additional $10 per month per smartwatch. The Galaxy Watch FE, Galaxy Watch 7, and Google Pixel Watch 3 are also available with cellular connectivity. Whether this convenience is worth it for you depends on how you plan to use your watch. If you want to stream music while you exercise and leave your phone at home or in the locker room, a cellular connection can certainly come in handy. If you always have your phone on you, however, you can probably save money and skip it.