Fitbit Flex 2 vs. Casio WSD-F20A vs. Garmin Forerunner 45 vs. Amazfit GTR vs. Apple SE

 
Flex 2
WSD-F20A
Forerunner 45
GTR
SE
 FitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowGarminForerunner 45Remove Buy NowAmazfitGTRRemove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$100$399$199$199$279
Release20162018201920192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 day7 days24 days18 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 320208 x 208454 x 454384 x 480
Sizen/a1.32 inches1.04 inches1.39 inches40mm
Touchn/a
TypeLEDLCDLCDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet SensorNot yet
Water Resistance5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSBuilt-inBuild-inWatchOS 5
Apps
Music

All Wearables