Garmin Vivoactive HR vs. Garmin Vivosmart HR vs. Garmin 645 Music vs. Garmin Vivosmart HR Plus vs. Amazfit T-Rex

 
Vivoactive HR
Vivosmart HR
645 Music
Vivosmart HR Plus
T-Rex
 GarminVivoactive HRRemove Buy NowGarminVivosmart HRRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivosmart HR PlusRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$170$450$179$140
Release20162015201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration13 hours to 8 days5 days7 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution148 x 205160 x 68240 x 240160 x 68360 x 360
Size1.38 inches1.08 inches1.2 inches0.5 inches x 0.8 inches1.3 inches
Touch
Typen/an/aMIPLCDAMOLED

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/an/aNABuild-in
Apps
Music

All Wearables