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
Apple Watch Series 4 vs Apple Watch Series 3: which should you buy? | T3
Should you buy the Apple Watch Nike+ Series 4 instead of the standard model? | AppleInsider
Apple Watch Series 7 (GPS) With Nike Sport Band 45mm Midnight Aluminium Case. Nike JP
Apple Watch Series 4 (Nike+, GPS, 40 mm) Specs (Watch Series 4 40 mm, MU6H2LL/A**, Watch4,1, A1977*, 3225*): EveryMac.com
Should you buy the Nike+ or standard Apple Watch Series 4? - YouTube