Amazon.com: beukei (3 Pack) for Samsung Gear S3 and Gear S3 Frontier Screen Protector Tempered Glass, Anti Scratch, Bubble Free(Not Fit for Galaxy Watch 42mm and Gear S2 Smartwatch) : Cell Phones
Samsung Galaxy Watch : Upgrade from the Samsung Gear S3 or another Wear OS Device? - YouTube
Samsung Galaxy Watch vs Gear S3 in pictures - SamMobile
Samsung Watch 4 and Gear S3 Frontier - 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
Bling Bezel For Samsung Galaxy Watch 42mm/46mm Case Gear S3 Frontier/Classic/S2/Sport Adhesive Cover band Accessories 46/42 3 - Walmart.com