Fitbit Flex 2 vs. Casio WSD-F20A vs. Apple Watch Series 5 vs. Garmin Forerunner 45 vs. Apple Series 6

 
Flex 2
WSD-F20A
Watch Series 5
Forerunner 45
Series 6
 FitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowAppleWatch Series 5Remove Buy NowGarminForerunner 45Remove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$100$399$329$199$399
Release20162018201920192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 dayNot Yet7 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 320384 x 480208 x 208384 x 480
Sizen/a1.32 inches1.78 Inches1.04 inches40mm
Touchn/a
TypeLEDLCDMicroLEDLCDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATM5 ATMNot Yet5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSWatchOS 5Built-inWatchOS 5
Apps
Music

All Wearables