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

 
Vivoactive HR
Flex
Forerunner 45
GTS
T-Rex
 GarminVivoactive HRRemove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy NowAmazfitGTSRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$100$199$150$140
Release20162013201920192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration13 hours to 8 days5 days7 days14 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution148 x 205NA208 x 208348 x 442360 x 360
Size1.38 inchesNA1.04 inches1.65 inches1.3 inches
TouchNA
Typen/aLEDLCDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNABuilt-inWear OSBuild-in
Apps
Music

All Wearables