Fitbit Alta vs. Fitbit Flex 2 vs. Michael Kors Grayson vs. Pebble Core vs. Michael Kors Grayson vs. Amazfit GTR

 
Alta
Flex 2
Grayson
Core
Grayson
GTR
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowMichael KorsGraysonRemove Buy NowPebbleCoreRemove Buy NowMichael KorsGraysonRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$130$100$350$99$350$199
Release201620162018201620182019

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration5 days5 days24 hoursNA24 hours24 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a453 x 454NA453x454454 x 454
Sizen/an/a1.39 inchesNA1.39 inches1.39 inches
Touchn/an/aNA
TypeOLEDLEDAMOLEDNAAMOLEDAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM1 ATMNA1 ATM5 ATM

Notifications

PhoneNA
Emailsn/aNA
TextsNA

Software

Operating Systemn/an/aAndroid WearNAAndroid WearBuild-in
Apps
Music

All Wearables