Apple Watch Models Compatible with Small Bands:
38mm - Series 1, Series 2, Series 3
40mm - Series 4, Series 5, Series 6, SE, SE 2
41mm - Series 7, Series 8, Series 9, SE 2
42mm - Series 10
Apple Watch Models Compatible with Large Bands:
42mm - Series 1, Series 2, Series 3
44mm - Series 4, Series 5, Series 6, SE, SE 2
45mm - Series 7, Series 8, Series 9
46mm - Series 10
49mm - Ultra 1, Ultra 2
