Fitbit Charge vs. Fitbit Charge 3 vs. Diesel On Full Guard 2.5 vs. Amazfit GTS vs. Amazfit T-Rex

 
Charge
Charge 3
On Full Guard 2.5
GTS
T-Rex
 FitbitChargeRemove Buy NowFitbitCharge 3Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitGTSRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$130$150$325$150$140
Release20142018201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7-10 days7 days4 days14 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
ResolutionNA66 x 18454x454348 x 442360 x 360
SizeNA.721 inches1.39 inches1.65 inches1.3 inches
TouchNA
TypeOLEDOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM5 ATM3 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNANAWear OSWear OSBuild-in
Apps
Music

All Wearables