Comparison of the Galaxy Watch3 45mm to the Gear S3 Frontier : r/GalaxyWatch
Hands On: Samsung Galaxy Watch 6 Trades Battery Life for a Bigger Screen | PCMag
Samsung Brings One UI And Battery Upgrades To Galaxy, Gear Watches | Digital Trends
Galaxy Gear S3 Smartwatch now Better than Samsung Galaxy Watch (46mm) after “One UI” Firmware Update - YouTube
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