Garmin Vivosmart HR vs. ASUS ZenWatch 3 vs. Fitbit Alta HR vs. Amazfit T-Rex vs. Apple Series 6

 
Vivosmart HR
ZenWatch 3
Alta HR
T-Rex
Series 6
 GarminVivosmart HRRemove Buy NowASUSZenWatch 3Remove Buy NowFitbitAlta HRRemove Buy NowAmazfitT-RexRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$170$229$150$140$399
Release20152017201720192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days48 hours7 days20 daysNot yet
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution160 x 68400 x 400128 x 36360 x 360384 x 480
Size1.08 inches1.39 inches1.4 inches1.3 inches40mm
Touch
Typen/aAMOLEDOLEDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2Build-inWatchOS 5
Apps
Music

All Wearables