Fitbit Flex 2 vs. Fitbit Ionic vs. Casio WSD-F20A vs. Diesel On Full Guard vs. Amazfit T-Rex

 
Flex 2
Ionic
WSD-F20A
On Full Guard
T-Rex
 FitbitFlex 2Remove Buy NowFitbitIonicRemove Buy NowCasioWSD-F20ARemove Buy NowDieselOn Full GuardRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$299$399$325$140
Release20162017201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days1 day1 day20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a348x250320 x 320454 x 454360 x 360
Sizen/a1.421.32 inches1.4 inches1.3 inches
Touchn/a
TypeLEDOLEDLCDOMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m5 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSWear OSAndroid Wear 2.0Build-in
Apps
Music

All Wearables