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).
Dimensions and Weight:
For the 41mm model:
- Height: 41mm
- Width: 35mm
- Depth: 10.7mm
- Weight (Aluminum, GPS): 31.9g
- Weight (Aluminum, GPS + Cellular): 32.1g
- Weight (Stainless Steel): 42.3g
For the 45mm model:
- Height: 45mm
- Width: 38mm
- Depth: 10.7mm
- Weight (Aluminum, GPS): 38.7g