Pebble Time vs. Fitbit Alta HR vs. Polar A370 vs. Diesel On Full Guard 2.5 vs. Amazfit T-Rex

 
Time
Alta HR
A370
On Full Guard 2.5
T-Rex
 PebbleTimeRemove Buy NowFitbitAlta HRRemove Buy NowPolarA370Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$150$179.95$325$140
Release20152017201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days7 daysUp to 3 days4 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144128 x 36160 x 80454x454360 x 360
Size1.26 inches1.4 inches1.18 inches1.39 inches1.3 inches
Touch
Typee-paperOLEDTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMWR303 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSWear OSBuild-in
Apps
Music

All Wearables