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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

Second-generation optical heart sensor

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 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

Track a casual walk, an intense ride, and everything in between.

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

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