Fitbit Flex 2 vs. Polar A360 vs. Polar Loop 2 vs. Amazfit Stratos vs. Michael Kors Grayson vs. Michael Kors Grayson

 
Flex 2
A360
Loop 2
Stratos
Grayson
Grayson
 FitbitFlex 2Remove Buy NowPolarA360Remove Buy NowPolarLoop 2Remove Buy NowAmazfitStratosRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$200$120$199$350$350
Release201620152015201820182018

Activity & Fitness

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

Battery

Duration5 days12 days8 days (without notifications)5 days24 hours24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a160 x 80n/a320 x 300453 x 454453x454
Sizen/a1.18 inchesn/a1.34 inches1.39 inches1.39 inches
Touchn/a
TypeLEDn/aLEDOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMWR302 ATM5 ATM1 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aProprietaryAndroid WearAndroid Wear
Apps
Music

All Wearables