49mm case
Aerospace grade titanium
Dual speakers
Three-microphone array with beamforming and wind noise mitigation
Control:
Customizable Action button
Digital Crown with haptic feedback
Side button
Double tap gesture
On-Device Siri
Display:
Always-On Retina LTPO OLED display
Flat sapphire crystal display
Up to 3000 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
Depth gauge ±1m accuracy and app
Water temperature sensor
Compass with Waypoints and Backtrack
Always-on altimeter
High-g accelerometerHigh dynamic range gyroscope
Ambient light sensor
Safety:
Emergency SOS Footnote 7
International emergency calling Footnote 8
Siren
Crash Detection Footnote 7
Fall Detection Footnote 7
Splash, Water and Dust:
Water resistance 100m (swim proof) Footnote 11
Dust resistance IP6X Footnote 18
EN13319 recreational scuba diving to 40m Footnote 11
Tested to MIL-STD 810H: altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration Footnote 19
Connectivity and Communication:
Precision dual-frequency GPS: GPS, GNSS, Galileo and BeiDou
LTE and UMTS Footnote 12
Wi-Fi 4 (802.11n)
Bluetooth 5.3
Second-generation Ultra Wideband chip Footnote 20
Apple Pay
GymKit
Power and Battery Life:
Built-in rechargeable lithium-ion battery
Up to 36 hours normal use Footnote 17
Up to 72 hours in Low Power Mode Footnote 17
USB-C magnetic fast charging cable
Environmental Requirements:
On-wrist operating temperature: -4° F to 130° F (-20° C to 55° C)
Operational temperature: 32°F to 95°F (0°C to 35°C)
Nonoperational storage temperature: 4°F to 113°F (-20° to 45°C)
Dive operating temperature: 32°F to 104°F (0°C to 40°C)
Relative humidity: 5% to 90% noncondensing
Operating Altitude: -1600 feet to 29,500 feet (-500 m to 9000 m)
