Apple Watch Series 3 vs. Fitbit Flex 2 vs. Casio WSD-F20A vs. Apple Watch Series 5 vs. Garmin Forerunner 45

 
Watch Series 3
Flex 2
WSD-F20A
Watch Series 5
Forerunner 45
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowAppleWatch Series 5Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$329$100$399$329$199
Release20172016201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days1 dayNot Yet7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/a320 x 320384 x 480208 x 208
Size1.5 inches or 1.65 inchesn/a1.32 inches1.78 Inches1.04 inches
Touchn/a
TypeAMOLEDLEDLCDMicroLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aWear OSWatchOS 5Built-in
Apps
Music

All Wearables