GMUJIAO Pack of 2 Case for Apple Watch Series 7 45 mm, Case with Screen Protector, Hard PC All-Round Screen Protector Case for Apple Watch Series 7 45 mm, Blue: Amazon.de: Electronics & Photo
Apple Watch Screen Resolutions: 312 x 390 for 42mm Version, 272 x 340 for 38mm Version - MacRumors
Apple Watch Ultra size comparison - PhoneArena
Compared: Rumored 47mm Apple Watch Series 8 size versus Series 7 - Apple Watch Discussions on AppleInsider Forums