Gear S3 Classic Vs Gear S3 Frontier: What's the Difference Between the Two?
Amazon.com: SAMSUNG Gear S3 Classic Smartwatch (Bluetooth), SM-R770NZSAXAR – US Version with Warranty : Electronics
Amazon.com: Samsung Gear S3 Classic Smartwatch 4GB SM-R770 with Leather Band (Silver) Tizen OS - International Version with No Warranty : Cell Phones & Accessories
Samsung Brings Enhanced 4G LTE Capability to Gear S3 Classic - Samsung US Newsroom