Fitbit Alta vs. Fitbit Flex 2 vs. Samsung Gear Fit2 vs. Casio WSD-F20A vs. Amazfit T-Rex

 
Alta
Flex 2
Gear Fit2
WSD-F20A
T-Rex
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowSamsungGear Fit2Remove Buy NowCasioWSD-F20ARemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$130$100$180$399$140
Release20162016201620182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days3-4 days1 day20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a432 x 216320 x 320360 x 360
Sizen/an/a1.5 inches1.32 inches1.3 inches
Touchn/an/a
TypeOLEDLEDSuper AMOLEDLCDAMOLED

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATMIP685 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aTizenWear OSBuild-in
Apps
Music

All Wearables