The Apple Watch had a growth spurt in 2018 when the two size options went from 38/42mm up to 40/44mm. A photo of a wrist strap, one presumably for the Apple Watch Series 7, hints that the new model may grow by another millimeter. The image shows a close-up of an encircled “45 MM”, which is the way Apple marks wrist straps since ones for different sizes are (normally) not interchangeable. This image ties into what leakster Uncle Pan was saying a few days ago – that the Series 7 will come in 41mm and 45mm sizes. We’ve been hearing about a redesign for Apple’s smartwatch, that will...
Source: https://www.gsmarena.com/the_new_apple_watch_series_7_may_come_in_41_and_45_mm_sizes_up_from_40_and_45_mm-news-50676.php