Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Garmin Instinct vs. Garmin Vivosmart 4 vs. Amazfit T-Rex

 
Flex
On Full Guard 2.5
Instinct
Vivosmart 4
T-Rex
 FitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminInstinctRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$325$300$130$140
Release20132018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4 days14 days7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
ResolutionNA454x454128 x 12848 x 128360 x 360
SizeNA1.39 inches0.9 inches0.74 inches1.3 inches
TouchNA
TypeLEDOMOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM3 ATM10 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWear OSBuild-in
Apps
Music

All Wearables