TomTom Spark vs. Fitbit Flex 2 vs. Polar Loop 2 vs. Michael Kors Grayson vs. Pebble Core vs. Michael Kors Grayson

 
Spark
Flex 2
Loop 2
Grayson
Core
Grayson
 TomTomSparkRemove Buy NowFitbitFlex 2Remove Buy NowPolarLoop 2Remove Buy NowMichael KorsGraysonRemove Buy NowPebbleCoreRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$150$100$120$350$99$350
Release201520162015201820162018

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heartn/an/a
Oxygen
SleepNA
Steps
Swim

Battery

Durationn/a5 days8 days (without notifications)24 hoursNA24 hours
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/an/an/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/an/a
Resolutionn/an/an/a453 x 454NA453x454
Sizen/an/an/a1.39 inchesNA1.39 inches
Touchn/aNA
TypeLCDLEDLEDAMOLEDNAAMOLED

Functions

Audio SpeakerBluetooth
Clock
Phonen/aNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM2 ATM1 ATMNA1 ATM

Notifications

Phonen/aNA
Emailsn/aNA
Textsn/aNA

Software

Operating Systemn/an/an/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables