Garmin Vivoactive HR vs. Fitbit Charge 3 vs. Fitbit Flex vs. Garmin Forerunner 45 vs. Amazfit T-Rex

 
Vivoactive HR
Charge 3
Flex
Forerunner 45
T-Rex
 GarminVivoactive HRRemove Buy NowFitbitCharge 3Remove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$150$100$199$140
Release20162018201320192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration13 hours to 8 days7 days5 days7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Macn/a
Windowsn/aNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution148 x 20566 x 18NA208 x 208360 x 360
Size1.38 inches.721 inchesNA1.04 inches1.3 inches
TouchNA
Typen/aOLEDLEDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANABuilt-inBuild-in
Apps
Music

All Wearables