Garmin Forerunner 735XT vs. Polar M400 vs. Diesel On Full Guard vs. Fitbit Alta HR vs. Amazfit T-Rex

 
Forerunner 735XT
M400
On Full Guard
Alta HR
T-Rex
 GarminForerunner 735XTRemove Buy NowPolarM400Remove Buy NowDieselOn Full GuardRemove Buy NowFitbitAlta HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$450$200$325$150$140
Release20162014201720172019

Activity & Fitness

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

Battery

Duration14 hours to 11 days8 hours to 30 days1 day7 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution215 x 180n/a454 x 454128 x 36360 x 360
Size1.23 inchesn/a1.4 inches1.4 inches1.3 inches
Touchn/a
Typen/an/aOMOLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aAndroid Wear 2.0Build-in
Apps
Music

All Wearables