Fitbit Alta vs. Michael Kors Grayson vs. Michael Kors Grayson vs. Mobvoi TicWatch S2 vs. Garmin Vivosmart 4 vs. Amazfit T-Rex

 
Alta
Grayson
Grayson
TicWatch S2
Vivosmart 4
T-Rex
 FitbitAltaRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy NowMobvoiTicWatch S2Remove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$130$350$350$180$130$140
Release201620182018201920182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days24 hours24 hours2 DAYS7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454453x454400 x 40048 x 128360 x 360
Sizen/a1.39 inches1.39 inches1.39 inches0.74 inches1.3 inches
Touchn/a
TypeOLEDAMOLEDAMOLEDOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a1 ATM1 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aAndroid WearAndroid WearWear OSBuild-in
Apps
Music

All Wearables