Garmin Forerunner 735XT vs. Garmin 645 Music vs. Garmin Vivosmart 3 vs. Fitbit Versa 2 vs. Amazfit T-Rex

 
Forerunner 735XT
645 Music
Vivosmart 3
Versa 2
T-Rex
 GarminForerunner 735XTRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivosmart 3Remove Buy NowFitbitVersa 2Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$450$450$139.99$199$140
Release20162018201720192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days7 days5 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution215 x 180240 x 24064 x 128300 x 300360 x 360
Size1.23 inches1.2 inchesNA1.34 inches1.3 inches
Touchn/a
Typen/aMIPOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aBuild-inBuild-in
Apps
Music

All Wearables