Fitbit Flex 2 vs. Polar Loop vs. Apple Watch Series 4 vs. Apple Watch Series 5 vs. Garmin Forerunner 45

 
Flex 2
Loop
Watch Series 4
Watch Series 5
Forerunner 45
 FitbitFlex 2Remove Buy NowPolarLoopRemove Buy NowAppleWatch Series 4Remove Buy NowAppleWatch Series 5Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$100$100$329$329$199
Release20162013201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 daysNot YetNot Yet7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/aNA384 x 480384 x 480208 x 208
Sizen/aNA1.78 inches1.78 Inches1.04 inches
Touchn/a
TypeLEDLEDMicroLEDMicroLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNAWatch OS 5WatchOS 5Built-in
Apps
Music

All Wearables