Fitbit Flex 2 vs. Polar Loop 2 vs. Michael Kors Access Sofie vs. Garmin Vivofit 4 vs. Garmin Vivosmart 3

 
Flex 2
Loop 2
Access Sofie
Vivofit 4
Vivosmart 3
 FitbitFlex 2Remove Buy NowPolarLoop 2Remove Buy NowMichael KorsAccess SofieRemove Buy NowGarminVivofit 4Remove Buy NowGarminVivosmart 3Remove Buy Now

Basic Info

Suggested Price$100$120$395$79.95$139.99
Release20162015201720182017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days8 days (without notifications)1 day1 year5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a390 x 390 1.19 inches88 x 8864 x 128
Sizen/an/aNANA
Touchn/aAMOLDED
TypeLEDLEDNAOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM2 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aAndroid Wear 2.0
Apps
Music

All Wearables