The common sizing to the previous few series before that was 40mm and 44mm, and that however applies to the Apple Watch SE. The 41mm Apple Watch will perform with bands through the 38mm and 40mm versions, plus the 45mm Apple Watch will work with bands manufactured for your 42mm https://strapforapplewatchband56543.howeweb.com/27338348/indicators-on-apple-watch-band-that-won-t-cause-rash-you-should-know