Pebble Time Round vs. Casio WSD-F20A vs. Pebble Core vs. Fitbit Inspire HR vs. Amazfit T-Rex

 
Time Round
WSD-F20A
Core
Inspire HR
T-Rex
 PebbleTime RoundRemove Buy NowCasioWSD-F20ARemove Buy NowPebbleCoreRemove Buy NowFitbitInspire HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$399$99$99$140
Release20152018201620192019

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration2 days1 dayNA5 days20 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 320NA139 x 60360 x 360
Sizeround1.32 inchesNA1.4 inches1.3 inches
TouchNA
Typee-paperLCDNAOLEDAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATMNA5 ATM5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemPebble OSWear OSNAFitbit OSBuild-in
Apps
Music

All Wearables