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32GB

64GB

2GB

6.0

Subject to change based on future operating system updates.

Yes

Ask Siri to set a reminder, send an invitation, or give you directions, all without your phone.

26

Subject to change based on future operating system updates

Bands 2, 4, 5, 12, 13, 17, 25, 26, 66, 71

Bands 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66

Yes

Yes

Required to use smartwatch over cellular; rate plan required

Wi-Fi 5 (802.11ac)

Wi-Fi 4 (802.11n)

2.4GHz & 5GHz

Open, Secure

v6.0 + EDR, A2DP, HS, LE

v5.3

Yes

Electronic SIM

Electronic SIM

Yes

850, 1700/2100, 1900, 2100MHz

Accelerometer, Ambient Light, Barometer, Gyroscope, Heat Flux, ECG, Compass, Blood oxygen sensor, Multi-path HR Optics, cEDA, UWB

Electrical heart sensor

Third-generation optical heart sensor

Blood oxygen sensor

Temperature sensor

Compass

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Depth gauge to 6 meters

Water temperature sensor

Yes

Insert pictures, video clips and sound clips easily (messaging charges apply)

Yes

Google YouTube Music

Apple Music®

LFLAC, M4A, MP3, OGG, WMA

Via lockscreen

Yes

The AT&T Eco-Rating 2.0 system gives you environmental and social details about this device. The system uses a total of 20 performance criteria across 5 different attributes, for a total rating of 1 to 5 stars: 19-20 (5-star), 16-18 (4-star), 13-15 (3-star), 10-12 (2-star), 8-9 (1-star)

3/4

2/3

1/1

2/2

7/10

15/20 (5-star) Please visit www.att.com/ecospace for additional information

Improved Workout app with new metrics, new views, and advanced ways to train.

Noise monitoring Fall Detection Emergency SOS Crash Detection

Track your daily activity on Apple Watch, and see your trends in the Fitness app on iPhone.

Generates an ECG similar to a single-lead electrocardiogram.

Keep tabs on your resting, walking, and workout recovery heart rate.