Fitbit Ionic vs. Amazfit Stratos vs. Diesel On Full Guard vs. Fitbit Flex vs. Amazfit T-Rex

 
Ionic
Stratos
On Full Guard
Flex
T-Rex
 FitbitIonicRemove Buy NowAmazfitStratosRemove Buy NowDieselOn Full GuardRemove Buy NowFitbitFlexRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$299$199$325$100$140
Release20172018201720132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days5 days1 day5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250320 x 300454 x 454NA360 x 360
Size1.421.34 inches1.4 inchesNA1.3 inches
TouchNA
TypeOLEDOLEDOMOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATMIP671 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSProprietaryAndroid Wear 2.0NABuild-in
Apps
Music

All Wearables