Pebble Time Round vs. Jaybird Reign vs. Polar A370 vs. Amazfit T-Rex

 
Time Round
Reign
A370
T-Rex
 PebbleTime RoundRemove Buy NowJaybirdReignRemove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$150$179.95$140
Release2015201520172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 daysUp to 3 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/aNA160 x 80360 x 360
SizeroundNA1.18 inches1.3 inches
TouchNA
Typee-paperLEDTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7NAWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSNABuild-in
Apps
Music

All Wearables