Garmin Vivofit 3 vs. Fitbit Ionic vs. Michael Kors Grayson vs. Michael Kors Grayson vs. Amazfit T-Rex vs. Garmin VivoActive 4

 
Vivofit 3
Ionic
Grayson
Grayson
T-Rex
VivoActive 4
 GarminVivofit 3Remove Buy NowFitbitIonicRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$100$299$350$350$140$349
Release201620172018201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration1 year4+ days24 hours24 hours20 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution64 x 64348x250453 x 454453x454360 x 360260 x 260
Size0.55 inches1.421.39 inches1.39 inches1.3 inches1.3ionches
Touch
Typen/aOLEDAMOLEDAMOLEDAMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m1 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSAndroid WearAndroid WearBuild-inWear OS
Apps
Music

All Wearables