Fitbit Surge vs. Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Michael Kors Grayson vs. Pebble Core vs. Michael Kors Grayson

 
Surge
Moto 360 (2nd Gen)
M400
Grayson
Core
Grayson
 FitbitSurgeRemove Buy NowMotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowMichael KorsGraysonRemove Buy NowPebbleCoreRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$250$300$200$350$99$350
Release201620152014201820162018

Activity & Fitness

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

Battery

Duration7 days1.5 days8 hours to 30 days24 hoursNA24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a360 x 325 or 360 x 330n/a453 x 454NA453x454
Size1.26 inches1.37 inches or 1.56 inchesn/a1.39 inchesNA1.39 inches
TouchNA
TypeMonochrome LCDLCDn/aAMOLEDNAAMOLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP673 ATM1 ATMNA1 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aAndroid Wearn/aAndroid WearNAAndroid Wear
Apps
Musicn/a

All Wearables