Pebble Time Round vs. Pebble Time Steel vs. Diesel On Full Guard vs. Fitbit Charge HR vs. Amazfit T-Rex

 
Time Round
Time Steel
On Full Guard
Charge HR
T-Rex
 PebbleTime RoundRemove Buy NowPebbleTime SteelRemove Buy NowDieselOn Full GuardRemove Buy NowFitbitCharge HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$250$325$150$140
Release20152015201720152019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days10 days1 day5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a168 x 144454 x 454NA360 x 360
Sizeround1.26 inches1.4 inchesNA1.3 inches
TouchNA
Typee-papere-paperOMOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATMIP671 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSPebble OSAndroid Wear 2.0NABuild-in
Apps
Music

All Wearables