The Apple Watch Series 9 boasts the brand's most advanced chip and an innovative new way to interact, while offering a display twice as bright. Available in both 45mm and 41mm case sizes, the watch features a digital crown with haptic feedback and an always-on Retina LTPO display. The design is similar to its predecessor, but Apple excels at making small yet significant improvements. Communication on the watch is clear and high-quality, and all the features from the Series 8 are included. In celebration of World AIDS Day, Apple will be donating all in-app purchase revenues from selected games to charity.