Fitbit Flex 2 vs. Amazfit Stratos vs. Amazfit Cor vs. Casio WSD-F20A vs. Amazfit T-Rex

 
Flex 2
Stratos
Cor
WSD-F20A
T-Rex
 FitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowAmazfitCorRemove Buy NowCasioWSD-F20ARemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$199$79.99$399$140
Release20162018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days12 days1 day20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 30080 x 160320 x 320360 x 360
Sizen/a1.34 inches1.23 inches1.32 inches1.3 inches
Touchn/a
TypeLEDOLEDIPS LCDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aProprietaryWear OSBuild-in
Apps
Music

All Wearables