It's important to consider compatibility and case sizing before buying. The Apple Watch Series 9 comes in 45mm or 41mm display options, while the second-gen SE is available in 44mm or 40mm.

Learn more FAQs A band compatible with the Apple Watch Ultra 2 fits the watch's 49mm case. Bands meant for 44mm, 45mm, and 46mm cases are cross-compatible with the Ultra 2's 49mm case, according ...