Polar Loop 2 vs. Michael Kors Grayson vs. Fitbit Alta HR vs. Fitbit Charge vs. Amazfit Verge vs. Michael Kors Grayson

 
Loop 2
Grayson
Alta HR
Charge
Verge
Grayson
 PolarLoop 2Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitAlta HRRemove Buy NowFitbitChargeRemove Buy NowAmazfitVergeRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$120$350$150$130$160$350
Release201520182017201420192018

Activity & Fitness

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

Battery

Duration8 days (without notifications)24 hours7 days7-10 days5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454128 x 36NA454x454453x454
Sizen/a1.39 inches1.4 inchesNA1.39 inches1.39 inches
TouchNA
TypeLEDAMOLEDOLEDOLEDOMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM1 ATM1 ATMIP681 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNAAMAZFIT OSAndroid Wear
Apps
Music

All Wearables