Fitbit Flex 2 vs. Michael Kors Grayson vs. Fitbit Flex vs. Jawbone UP4 vs. Polar Loop vs. Michael Kors Grayson

 
Flex 2
Grayson
Flex
UP4
Loop
Grayson
 FitbitFlex 2Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitFlexRemove Buy NowJawboneUP4Remove Buy NowPolarLoopRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$350$100$200$100$350
Release201620182013201520132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days24 hours5 daysNA5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a453 x 454NANANA453x454
Sizen/a1.39 inchesNANANA1.39 inches
Touchn/aNANA
TypeLEDAMOLEDLEDNALEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM1 ATMNA2 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNANANAAndroid Wear
Apps
MusicNA

All Wearables