The Samsung Gear S3 is the third premium wearable from Samsung that uses its own Tizen operating system. The S3 is offered in two configurations, Frontier and Classic, with the former being more targeted towards more active users with its built-in GPS and more rugged design, while the Classic is for the style-conscious. Like the Gear S2, the S3 offers a rotating bezel for UI navigation. There is also support for Samsung Pay, LTE (in some models), plus altitude and barometric pressure measurement. Samsung claims the S3 can go four days between charges.