Fitbit Flex 2 vs. Polar Loop vs. Apple Watch Series 5 vs. Garmin Forerunner 45 vs. Amazfit GTR

 
Flex 2
Loop
Watch Series 5
Forerunner 45
GTR
 FitbitFlex 2Remove Buy NowPolarLoopRemove Buy NowAppleWatch Series 5Remove Buy NowGarminForerunner 45Remove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$100$100$329$199$199
Release20162013201920192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 daysNot Yet7 days24 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/aNA384 x 480208 x 208454 x 454
Sizen/aNA1.78 Inches1.04 inches1.39 inches
Touchn/a
TypeLEDLEDMicroLEDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM2 ATMNot Yet5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNAWatchOS 5Built-inBuild-in
Apps
Music

All Wearables