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 SiriFootnote

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: 

Blood oxygen sensor and app

Electrical heart sensor and ECG app

Third-generation optical heart sensor

High and low heart rate notifications

Irregular rhythm notifications

Sleep stages

Temperature sensing

Depth gauge ±1m accuracy and app

Water temperature sensor

Compass with Waypoints and Backtrack

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Safety: 

Emergency SOS

International emergency calling

Siren

Crash Detection

Fall Detection

Splash, Water and Dust: 

Water resistance 100m (swim proof)

Dust resistance IP6X

EN13319 recreational scuba diving to 40m

Tested to MIL-STD 810H: altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration

Connectivity and Communication: 

Precision dual-frequency GPS: GPS, GNSS, Galileo and BeiDou

LTE and UMTS

Wi-Fi 4 (802.11n)

Bluetooth 5.3

Second-generation Ultra Wideband chip

Apple Pay

GymKit

Power and Battery Life: 

Built-in rechargeable lithium-ion battery

Up to 36 hours normal use 

Up to 72 hours in Low Power Mode 

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)

Height: 49mm

Width: 44mm

Depth: 14.4mm

Case Weight: 61.4g