Fitbit Alta vs. Garmin Vivosmart HR vs. Garmin Fenix 5X vs. Michael Kors Grayson vs. Michael Kors Grayson vs. Amazfit T-Rex

 
Alta
Vivosmart HR
Fenix 5X
Grayson
Grayson
T-Rex
 FitbitAltaRemove Buy NowGarminVivosmart HRRemove Buy NowGarminFenix 5XRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$130$170$699$350$350$140
Release201620152017201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 daysUp to 12 days24 hours24 hours20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a160 x 68240 x240453 x 454453x454360 x 360
Sizen/a1.08 inches1.2 inches1.39 inches1.39 inches1.3 inches
Touchn/a
TypeOLEDn/aNAAMOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM10 ATM1 ATM1 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aAndroid WearAndroid WearBuild-in
Apps
Music

All Wearables