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 is rolling out Tizen 4 to the Samsung Gear S3 and Gear Sport smartwatches
Samsung Galaxy watches v Wear OS: Tizen or Android Wear
Samsung Tizen 4.0 New Features On The Galaxy Watch. - YouTube