Polar M400 vs. Garmin Fenix 5 vs. Michael Kors Grayson vs. Pebble Core vs. Michael Kors Grayson vs. Fitbit Inspire 3

 
M400
Fenix 5
Grayson
Core
Grayson
Inspire 3
 PolarM400Remove Buy NowGarminFenix 5Remove Buy NowMichael KorsGraysonRemove Buy NowPebbleCoreRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitInspire 3Remove Buy Now

Basic Info

Suggested Price$200$599.99$350$99$350$100
Release201420172018201620182022

Activity & Fitness

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

Battery

Duration8 hours to 30 days2 Weeks24 hoursNA24 hours10 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240453 x 454NA453x45432x18
Sizen/a1.2 inches1.39 inchesNA1.39 inches46 inches
TouchNA
Typen/anaAMOLEDNAAMOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM10 ATM1 ATMNA1 ATM5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables