Pebble Time Round vs. Fitbit Flex vs. Polar A370 vs. Diesel On Full Guard 2.5 vs. Amazfit GTR

 
Time Round
Flex
A370
On Full Guard 2.5
GTR
 PebbleTime RoundRemove Buy NowFitbitFlexRemove Buy NowPolarA370Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$200$100$179.95$325$199
Release20152013201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 daysUp to 3 days4 days24 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/aNA160 x 80454x454454 x 454
SizeroundNA1.18 inches1.39 inches1.39 inches
TouchNA
Typee-paperLEDTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX71 ATMWR303 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSNAWear OSBuild-in
Apps
Music

All Wearables