Apple Watch Series 9

Apple Watch Series 9
45mm or 41mm case size
Aluminum or stainless steel
Speaker
Microphone
Control:
Digital Crown with haptic feedback
Side button
Double tap gesture
On-Device Siri
Display:
Always-On Retina LTPO OLED display
Edge-to-edge display
Ion-X front glass (Aluminum cases)
Sapphire front crystal (Stainless steel cases)
Up to 2000 nits maximum brightness
1 nit minimum brightness
Chip:
S9 SiP with 64-bit dual-core processor
4-core Apple Neural Engine
64GB capacity
Sensors:
Electrical heart sensor and ECG app Footnote 3
Third-generation optical heart sensor
High and low heart rate notifications Footnote 3
Irregular rhythm notifications Footnote 4
Sleep stages
Temperature sensing Footnote 5
Compass with Waypoints and Backtrack
Always-on altimeter
High-g accelerometer
Ambient light sensor
Safety:
Emergency SOS Footnote 7
International emergency calling Footnote 8
Crash Detection Footnote 7
Fall Detection Footnote 7
Splash, Water and Dust:
Water resistance 50m (swim proof) Footnote 10
Dust resistance IP6X Footnote 18
Connectivity and Communication:
L1 GPS, GNSS, Galileo, and BeiDou
LTE and UMTS Footnote 12
Wi-Fi 4 (802.11n)
Bluetooth 5.3
Second-generation Ultra Wideband chip Footnote 19
Apple Pay
GymKit
Power and Battery Life:
Built-in rechargeable lithium-ion battery
Up to 18 hours normal use Footnote 15
Up to 36 hours in Low Power Mode Footnote 15
USB-C magnetic fast charging 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% noncondensing
Operating Altitude: 0 feet to 10,000 feet (0 m to 3000 m)