Polar M600 vs. TomTom Spark vs. Fitbit Alta vs. Michael Kors Grayson vs. Garmin Vivofit 4 vs. Michael Kors Grayson

 
M600
Spark
Alta
Grayson
Vivofit 4
Grayson
 PolarM600Remove Buy NowTomTomSparkRemove Buy NowFitbitAltaRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVivofit 4Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$150$130$350$79.95$350
Release201620152016201820182018

Activity & Fitness

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

Battery

Duration2 daysn/a5 days24 hours1 year24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/an/a453 x 45488 x 88453x454
Size1.3 inchesn/an/a1.39 inchesNA1.39 inches
Touchn/an/a
TypeTFTLCDOLEDAMOLEDNAAMOLED

Functions

Audio SpeakerAlerts onlyBluetooth
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATMn/a1 ATM5 ATM1 ATM

Notifications

Phonen/a
Emailsn/an/a
Textsn/a

Software

Operating SystemAndroid Wearn/an/aAndroid WearAndroid Wear
Apps
Music

All Wearables