Fitbit One vs. Amazfit Arc vs. Michael Kors Grayson vs. Fitbit Alta HR vs. Fitbit Flex vs. Michael Kors Grayson

 
One
Arc
Grayson
Alta HR
Flex
Grayson
 FitbitOneRemove Buy NowAmazfitArcRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitAlta HRRemove Buy NowFitbitFlexRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$69.99$350$150$100$350
Release201220162018201720132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days20 days24 hours7 days5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a72 x40453 x 454128 x 36NA453x454
Sizen/a0.42 inches1.39 inches1.4 inchesNA1.39 inches
TouchNA
TypeOLEDOLEDAMOLEDOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast ResistantIP671 ATM1 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables