Apple Watch SE (and Series 4, 5, 6): 40mm and 44mm Apple Watch Series 10: 42/46mm Apple Watch Ultra/Ultra 2: 49mm Over the years, the Apple Watch has gradually increased in size, now offering 42mm ...

if you have a 42mm or 44mm Watch and use the larger Sport Band on the outermost hole, you need to order your Solo Loop in size 12. If you don't have a printer available to use Apple's printable ...