My old Samsung Gear S3 classic 46 mm vs the Galaxy Watch 4 40 mm that I replaced it with. This feels like a major upgrade, and I am loving Wear OS 3. : r/GalaxyWatch
Samsung Gear S3 classic review: A smartwatch with style, longevity, and a unique talent - Neowin
Samsung Gear S3 classic - Full phone specifications
Hands-On: The Samsung Gear S3 Smartwatch Classic And Frontier (Designed By The Guy Who Brought You The Titanic DNA Watch From Romain Jerome) - Hodinkee