The Apple Watch Series 9 is your essential companion for a healthy life, now even more powerful. Featuring the S9 chip for a super-bright display and a new way to interact without touching the screen. Advanced health, safety, and activity features provide powerful insights and help when you need it. Redesigned apps in watchOS offer more information at a glance. This specific model is carbon neutral when paired with the latest Sport Loop. Key health features include blood oxygen monitoring, ECG, irregular heart rhythm notifications, sleep stage tracking, and temperature sensing for well-being and cycle tracking. It acts as a powerful fitness partner with the Workout app offering various training methods and advanced metrics. It also includes innovative safety features like Fall Detection, Crash Detection, and Emergency SOS for quick help. Seamlessly compatible with Apple devices and services, it works with Apple devices and services, unlocks Macs, provides Precision Finding for iPhones, and allows payments with Apple Pay. Requires iPhone Xs or later with iOS 17 or later. Easily customizable with a range of watch straps and watch faces.