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
Apple Watch 3 Vs. Samsung Gear Sport: The Software Makes The Difference
Samsung Gear S3 vs. Apple Watch
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
Samsung Galaxy Watch vs Gear S3 in pictures - SamMobile