Garmin Fenix 5 vs. Diesel On Full Guard vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Amazfit T-Rex

 
Fenix 5
On Full Guard
Flex
On Full Guard 2.5
T-Rex
 GarminFenix 5Remove Buy NowDieselOn Full GuardRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$599.99$325$100$325$140
Release20172017201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 Weeks1 day5 days4 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240454 x 454NA454x454360 x 360
Size1.2 inches1.4 inchesNA1.39 inches1.3 inches
TouchNA
TypenaOMOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATMIP671 ATM3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wear 2.0NAWear OSBuild-in
Apps
Music

All Wearables