The Apple Watch Series 9 (S9) for 2023 has a variety of features and specifications, available in different case sizes and materials. Here's an overview of its key features:
Case Size and Material:
Available in 45mm or 41mm.
Display:
Always-On Retina display.
Up to 2000 nits maximum brightness.
The display is an LTPO OLED with an edge-to-edge design.
Aluminum cases feature Ion-X front glass, while stainless steel cases have a Sapphire front crystal.
Processor:
Powered by the S9 SiP (System in Package) with a 64-bit dual-core processor.
Equipped with a 4-core Apple Neural Engine.
Comes with 64GB storage capacity.
Sensors:
Blood Oxygen sensor and app.
Electrical heart sensor with an ECG (Electrocardiogram) app.
Third-generation optical heart sensor.
Provides high and low heart rate notifications.
Offers irregular rhythm notifications.
Measures sleep stages.
Includes temperature sensing.
Features a compass with Waypoints and Backtrack.
Always-on altimeter.
Equipped with a high-G accelerometer.
High dynamic range gyroscope.
Ambient light sensor.
Safety and Health:
Supports Emergency SOS and international emergency calling.
Offers Crash Detection and Fall Detection.
Blood Oxygen app.
ECG app.
High and low heart rate notifications.
Irregular rhythm notifications.
Temperature sensing.
Cycle Tracking with retrospective ovulation estimates.
Water and Dust Resistance:
Water-resistant up to 50 meters (swimproof).
Dust resistance with IP6X rating.
Connectivity and Communication:
GPS (L1), GNSS, Galileo, and BeiDou.
Available LTE and UMTS cellular connectivity.
Wi-Fi 4 (802.11n) support.
Bluetooth 5.3.
Second-generation Ultra Wideband chip.
Compatible with Apple Pay and GymKit.
Power and Battery Life:
Built-in rechargeable lithium-ion battery.
Up to 18 hours of normal use.
Up to 36 hours in Low Power Mode.
Fast charging via a USB-C magnetic cable.
Environmental Requirements:
Operational temperature: 32°F to 95°F (0°C to 35°C).
Nonoperational storage temperature: 4°F to 113°F (-20° to 45°C).
Relative humidity: 5% to 90% non-condensing.
Operating altitude: 0 feet to 10,000 feet (0 m to 3000 m).
