Fitbit One vs. Garmin 645 Music vs. Michael Kors Grayson vs. Garmin Vivosmart 3 vs. Polar Loop vs. Michael Kors Grayson

 
One
645 Music
Grayson
Vivosmart 3
Loop
Grayson
 FitbitOneRemove Buy NowGarmin645 MusicRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart 3Remove Buy NowPolarLoopRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$450$350$139.99$100$350
Release201220182018201720132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days7 days24 hours5 days5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240453 x 45464 x 128NA453x454
Sizen/a1.2 inches1.39 inchesNANA1.39 inches
Touch
TypeOLEDMIPAMOLEDOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant5 ATM1 ATM5 ATM2 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables