Fitbit Ionic vs. Garmin Vivosmart 4 vs. Amazfit T-Rex vs. Garmin VivoActive 4 vs. HTC re Grip

 
Ionic
Vivosmart 4
T-Rex
VivoActive 4
re Grip
 FitbitIonicRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$299$130$140$349$199
Release20172018201920192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days7 days20 days8 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x25048 x 128360 x 360260 x 260160 x 32
Size1.420.74 inches1.3 inches1.3ionches1.8 inches
Touch
TypeOLEDOLEDAMOLEDMIPPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSBuild-inWear OSNA
Apps
Music

All Wearables