Compare devices

Exynos W920

S8

Dual-core, 2 at 1.18GHz

64-bit dual-core processor

Up to 16GB

32GB

1.5

Wear OS Powered by Samsung

9

Yes

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

Bands 2, 4, 5, and 12

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

HSPA+ with enhanced backhaul

850/1900MHz

850/1700/1900/2100MHz

Yes

Yes

Required to use smartwatch over cellular; rate plan required

802.11a/b/g/n

802.11b/g/n

2.4GHz & 5.0GHz

2.4GHz and 5GHz

Open, Secure

v5.0 + EDR, A2DP, HS, LE

v5.0

Yes

eSim

Electronic SIM

Yes

Yes

Accelerometer, Ambient Light, Barometer, Gyroscope, Heart Rate,E-Compass, Magnetometer, ECG

Ambient light, accelerometer, barometric altimeter, built-in GPS, gyroscope, third-generation optical heart rate

Send and receive text messages from your wrist (messaging charges apply).

Yes

Outlook

Yes

Music

Apple Music®

MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB

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)

4/4

2/3

1/1

2/2

10/10

19/20 (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.