Pebble Time Round vs. Fitbit Flex 2 vs. Diesel On Full Guard vs. Pebble Core vs. Amazfit T-Rex

 
Time Round
Flex 2
On Full Guard
Core
T-Rex
 PebbleTime RoundRemove Buy NowFitbitFlex 2Remove Buy NowDieselOn Full GuardRemove Buy NowPebbleCoreRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$100$325$99$140
Release20152016201720162019

Activity & Fitness

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

Battery

Duration2 days5 days1 dayNA20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a454 x 454NA360 x 360
Sizeroundn/a1.4 inchesNA1.3 inches
Touchn/aNA
Typee-paperLEDOMOLEDNAAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATMIP67NA5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemPebble OSn/aAndroid Wear 2.0NABuild-in
Apps
Music

All Wearables