Apple Watch Series 2 vs. Fitbit Ionic vs. Fitbit Charge 3 vs. Garmin Forerunner 45 vs. Amazfit T-Rex

 
Watch Series 2
Ionic
Charge 3
Forerunner 45
T-Rex
 AppleWatch Series 2Remove Buy NowFitbitIonicRemove Buy NowFitbitCharge 3Remove Buy NowGarminForerunner 45Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$269$299$150$199$140
Release20162017201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours4+ days7 days7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312348x25066 x 18208 x 208360 x 360
Size1.5 inches or 1.65 inches1.42.721 inches1.04 inches1.3 inches
Touch
TypeAMOLEDOLEDOLEDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5ATM50m5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSFitbit OSNABuilt-inBuild-in
Apps
Music

All Wearables