Fitbit Ionic vs. Asus ZenWatch vs. Apple Watch Series 4 vs. Amazfit T-Rex vs. HTC re Grip

 
Ionic
ZenWatch
Watch Series 4
T-Rex
re Grip
 FitbitIonicRemove Buy NowAsusZenWatchRemove Buy NowAppleWatch Series 4Remove Buy NowAmazfitT-RexRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$299$150$329$140$199
Release20172014201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ daysNANot Yet20 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250320 x 320384 x 480360 x 360160 x 32
Size1.421.63 inches1.78 inches1.3 inches1.8 inches
Touch
TypeOLEDAMOLEDMicroLEDAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50mIP55Not Yet5 ATMIP57

Notifications

Phone
EmailsNA
TextsNA

Software

Operating SystemFitbit OSAndroid WearWatch OS 5Build-inNA
Apps
Music

All Wearables