Samsung's first smartwatch that can operate stand-alone. Introduced in 2014, the Tizen-based Gear S has built-in 3G capability, and although it can work in conjunction with a Samsung Galaxy smartphone, calls can be made and received on the watch with its own phone number under the user's calling plan from the carrier. Like most smartwatches, several built-in watch faces are available. GPS navigation, 24-hour news and health apps are also standard. See Samsung Gear, Tizen and smartwatch.