Made a rough size comparison between galaxy watch 4 and Apple watch series 7 when doing my shopping, maybe this will help someone else. : r/GalaxyWatch
Samsung's Galaxy Watch 4 could be a peek at the future of Android smartwatches - CNET
Samsung Gear S4 could be the 'Galaxy Watch', new Gear Fit in the cards - PhoneArena
Samsung Galaxy Watch 4 Classic - The Official Samsung Galaxy Site
Most Smartwatch Companies Aren't Truthful in Size Specs | DC Rainmaker
Galaxy Watch 5 - dimensions checked and compared (spoiler: don't trust the specs!) | DCRainmaker : r/GalaxyWatch
Samsung Galaxy Watch: Which size should you buy? | Android Central
Samsung Galaxy Watch Active Dimensions & Drawings | Dimensions.com