Fitbit Alta vs. Fitbit Charge 2 vs. Moov Now vs. Michael Kors Grayson vs. Polar A370 vs. Michael Kors Grayson

 
Alta
Charge 2
Now
Grayson
A370
Grayson
 FitbitAltaRemove Buy NowFitbitCharge 2Remove Buy NowMoovNowRemove Buy NowMichael KorsGraysonRemove Buy NowPolarA370Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$130$150$79$350$179.95$350
Release201620162015201820172018

Activity & Fitness

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

Battery

Duration5 days5 days6 months24 hoursUp to 3 days24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/an/a453 x 454160 x 80453x454
Sizen/an/an/a1.39 inches1.18 inches1.39 inches
Touchn/an/an/a
TypeOLEDOLEDn/aAMOLEDTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibrationn/a
Voice

Hardware

Accelerometer
Barometer or Altimetern/a
Ultraviolet Sensor
Water Resistancen/an/an/a1 ATMWR301 ATM

Notifications

Phone
Emailsn/a
Texts

Software

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

All Wearables