Enlarge / The Apple Watch Ultra 2.Apple Starting today, if you buy an Apple Watch Series 9 or Watch Ultra 2 it won’t be able to tell you your blood oxygen levels, a feature that Apple heavily touted when first introducing the capability in 2020. Although the watches will be less capable than watches of the same model sold before today, Apple is selling the pared-down watches at the same prices as before. On Wednesday, the US Court of Appeals for the Federal Circuit denied [PDF] Apple’s request t...