Fitbit Flex vs. Garmin Vivosmart 3 vs. Jaybird Reign vs. Diesel On Full Guard 2.5 vs. Garmin Forerunner 45

 
Flex
Vivosmart 3
Reign
On Full Guard 2.5
Forerunner 45
 FitbitFlexRemove Buy NowGarminVivosmart 3Remove Buy NowJaybirdReignRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$100$139.99$150$325$199
Release20132017201520182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days5 days4 days7 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
ResolutionNA64 x 128NA454x454208 x 208
SizeNANANA1.39 inches1.04 inches
TouchNANA
TypeLEDOLEDLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM5 ATMNA3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNANAWear OSBuilt-in
Apps
Music

All Wearables