The Apple Watch Series 9 GPS (45mm) is Apple's 2023 flagship smartwatch powered by the S9 chip with a 64-bit dual-core processor, 4-core Neural Engine, and 64GB of onboard storage. The Midnight aluminum case is paired with a matching Midnight Sport Band in M/L size, fitting wrists 140 to 245mm.

The always-on Retina LTPO OLED display delivers up to 2,000 nits of brightness for clear outdoor visibility and dims to 1 nit in low-light environments. The innovative Double Tap gesture enables hands-free control by tapping your index finger and thumb together to answer calls, dismiss notifications, and manage media playback without touching the screen. On-device Siri processing provides faster, more private voice assistance directly on the watch.

Health and wellness features include an electrical heart sensor with ECG app, a third-generation optical heart sensor with high and low heart rate notifications, temperature sensing for cycle tracking and wellness insights, and sleep stage monitoring. Built-in GPS, GNSS, Galileo, and BeiDou provide accurate location tracking independent of an iPhone. Connectivity includes Wi-Fi 4 (802.11n), Bluetooth 5.3, Apple Pay, and a second-generation Ultra Wideband chip for Precision Finding. Water resistance to 50 meters (ISO 22810:2010) and IP6X dust resistance make it suitable for swimming in pools and open water. Safety features include Crash Detection, Fall Detection, and Emergency SOS with international emergency calling. Battery life is rated at up to 18 hours of normal use, or up to 36 hours in Low Power Mode, with fast charging delivering 80% charge in approximately 45 minutes.

This model (MR9A3LW/A) does not include the Blood Oxygen app.