Pebble Classic vs. Fitbit Alta vs. Casio WSD-F20A vs. Polar Loop vs. Amazfit T-Rex

 
Classic
Alta
WSD-F20A
Loop
T-Rex
 PebbleClassicRemove Buy NowFitbitAltaRemove Buy NowCasioWSD-F20ARemove Buy NowPolarLoopRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$99$130$399$100$140
Release20132016201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5-7 days5 days1 day5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a320 x 320NA360 x 360
Size1.26 inchesn/a1.32 inchesNA1.3 inches
Touchn/a
Typee-paperOLEDLCDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM2 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemPebble OSn/aWear OSNABuild-in
Apps
Music

All Wearables