Apple Watch Series 9 is a GPS smart watch with a 45 mm Starlight aluminium case.

It features an Always-On Retina LTPO OLED display with a resolution of 396 x 484 pixels and up to 2000 nits maximum brightness for better visibility outdoors. The Apple S9 chip and 64 GB of internal storage provide fast performance and ample space for apps and data. The watch includes an Electrical heart sensor, third-generation optical heart sensor, compass, always-on altimeter, accelerometer, and gyroscope. Supported health and convenience features include ECG, Cycle Tracking with retrospective ovulation estimates, sleep tracking, fall detection, Crash Detection, Emergency SOS, Apple Pay, and Double Tap. The aluminium case is protected by Ion-X front glass, while water resistance is rated to 50 m and dust resistance to IP6X. This configuration comes with a Starlight Sport Band in S/M size, making it a strong choice for everyday use and fitness tracking.