Fitbit One vs. ASUS ZenWatch 3 vs. Fitbit Ionic vs. Garmin Fenix 5s vs. Amazfit T-Rex

 
One
ZenWatch 3
Ionic
Fenix 5s
T-Rex
 FitbitOneRemove Buy NowASUSZenWatch 3Remove Buy NowFitbitIonicRemove Buy NowGarminFenix 5sRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$229$299$599.99$140
Release20122017201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days48 hours4+ daysUp to 9 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a400 x 400348x250218x 218360 x 360
Sizen/a1.39 inches1.421.1 inches1.3 inches
Touch
TypeOLEDAMOLEDOLEDnaAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant50m10ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2Fitbit OSBuild-in
Apps
Music

All Wearables