Garmin Fenix 3 vs. ASUS ZenWatch 3 vs. Fitbit Ionic vs. Amazfit T-Rex vs. Apple Watch 7

 
Fenix 3
ZenWatch 3
Ionic
T-Rex
Watch 7
 GarminFenix 3Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitIonicRemove Buy NowAmazfitT-RexRemove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$500$229$299$140$429
Release20152017201720192021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration50 hours to 6 weeks48 hours4+ days20 days18 Hours
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution218 x 218400 x 400348x250360 x 360396 x 484
Size1.2 inches1.39 inches1.421.3 inches1.9 inches
Touch
TypeChroma LEDAMOLEDOLEDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM50m5 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2Fitbit OSBuild-inWatchOS 8
Apps
Music

All Wearables