Fitbit Ionic vs. Asus VivoWatch vs. Garmin 645 Music vs. Garmin Chronos vs. Amazfit T-Rex

 
Ionic
VivoWatch
645 Music
Chronos
T-Rex
 FitbitIonicRemove Buy NowAsusVivoWatchRemove Buy NowGarmin645 MusicRemove Buy NowGarminChronosRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$299$160$450$1500$140
Release20172018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days24 hours to 10 days7 days8 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250128 x 128240 x 240218 x 218360 x 360
Size1.42NA1.2 inches1.2 inches1.3 inches
Touch
TypeOLEDNAMIPMIPAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water Resistance50mIP675 ATM10 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSKoodOSWear OSBuild-in
Apps
Music

All Wearables