Garmin Fenix 3 vs. Garmin Fenix 5X vs. Fitbit Flex vs. Jaybird Reign vs. Amazfit T-Rex

 
Fenix 3
Fenix 5X
Flex
Reign
T-Rex
 GarminFenix 3Remove Buy NowGarminFenix 5XRemove Buy NowFitbitFlexRemove Buy NowJaybirdReignRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$500$699$100$150$140
Release20152017201320152019

Activity & Fitness

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

Battery

Duration50 hours to 6 weeksUp to 12 days5 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution218 x 218240 x240NANA360 x 360
Size1.2 inches1.2 inchesNANA1.3 inches
TouchNANA
TypeChroma LEDNALEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM10 ATM1 ATMNA5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANABuild-in
Apps
Music

All Wearables