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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

v5.2 + EDR, A2DP, HS, LE

Bluetooth 5.3

Yes

eSim

Electronic SIM

Yes

850, 1700/2100, 1900, 2100MHz

Accelerometer, Ambient Light, Barometer, Blood Oxygen, cEDA, Compass, ECG, Gyroscope, Heart Flux, Heart Rate, Multi-path HR Optics, UWB

Electrical heart sensor

Third-generation optical heart sensor

Blood oxygen sensor

Temperature sensor

Depth gauge

Water temperature sensor

Compass

Always-on altimeter

High-g accelerometer

High dynamic range gyroscope

Ambient light sensor

Yes

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

Yes

Google Play, 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

3/3

1/1

2/2

7/10

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

Siren, Backtrack, Fall Detection, Emergency SOS and Crash Detection.

Set workout-specific goals, see full summaries when you're done, and track how you're trending over time.

Generates an ECG similar to a single-lead electrocardiogram.

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