Garmin Fenix 3 vs. Polar M400 vs. Fitbit Alta vs. Garmin Fenix 5s Plus vs. Amazfit T-Rex

 
Fenix 3
M400
Alta
Fenix 5s Plus
T-Rex
 GarminFenix 3Remove Buy NowPolarM400Remove Buy NowFitbitAltaRemove Buy NowGarminFenix 5s PlusRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$500$200$130$799$140
Release20152014201620182019

Activity & Fitness

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

Battery

Duration50 hours to 6 weeks8 hours to 30 days5 days7 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution218 x 218n/an/a240 x 240360 x 360
Size1.2 inchesn/an/a1.2 inches1.3 inches
Touchn/a
TypeChroma LEDn/aOLEDMIPAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM3 ATMn/a10 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/an/aWear OSBuild-in
Apps
Music

All Wearables