Apple Watch Series 3 vs. Garmin Vivosmart HR vs. Fitbit Charge 3 vs. Amazfit T-Rex vs. Garmin VivoActive 4

 
Watch Series 3
Vivosmart HR
Charge 3
T-Rex
VivoActive 4
 AppleWatch Series 3Remove Buy NowGarminVivosmart HRRemove Buy NowFitbitCharge 3Remove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$329$170$150$140$349
Release20172015201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days7 days20 days8 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312160 x 6866 x 18360 x 360260 x 260
Size1.5 inches or 1.65 inches1.08 inches.721 inches1.3 inches1.3ionches
Touch
TypeAMOLEDn/aOLEDAMOLEDMIP

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 SystemWatchOS 4n/aNABuild-inWear OS
Apps
Music

All Wearables