Fitbit Flex 2 vs. Garmin Vivosmart HR vs. Amazfit Cor vs. Fitbit Alta HR vs. Polar Loop

 
Flex 2
Vivosmart HR
Cor
Alta HR
Loop
 FitbitFlex 2Remove Buy NowGarminVivosmart HRRemove Buy NowAmazfitCorRemove Buy NowFitbitAlta HRRemove Buy NowPolarLoopRemove Buy Now

Basic Info

Suggested Price$100$170$79.99$150$100
Release20162015201820172013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days12 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a160 x 6880 x 160128 x 36NA
Sizen/a1.08 inches1.23 inches1.4 inchesNA
Touchn/a
TypeLEDn/aIPS LCDOLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM2 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aNA
Apps
Music

All Wearables