Gear S3 Frontier vs Galaxy Watch3 - Technically it's a marginally thinner but smaller housing, narrower bezels, and weighs significantly less. It feels thinner than it looks, maybe due to the back
Insten Stainless Steel Metal Band For Samsung Galaxy Watch 3 45mm (2020) / 46mm (2018) / Gear S3 Frontier, Replacement Strap For Women Men, Silver : Target
Gear S3 frontier 46mm smartwatch (Bluetooth), Dark Gray
Samsung Galaxy Watch v Gear S3: The key differences between the smartwatches - Wareable