Fitbit Flex 2 vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Garmin Forerunner 45 vs. Amazfit GTS

 
Flex 2
Flex
On Full Guard 2.5
Forerunner 45
GTS
 FitbitFlex 2Remove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminForerunner 45Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$100$100$325$199$150
Release20162013201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days4 days7 days14 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/aNA454x454208 x 208348 x 442
Sizen/aNA1.39 inches1.04 inches1.65 inches
Touchn/aNA
TypeLEDLEDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM3 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNAWear OSBuilt-inWear OS
Apps
Music

All Wearables