Fitbit One vs. Michael Kors Grayson vs. Fitbit Charge HR vs. Michael Kors Grayson vs. Mobvoi TicWatch C2 vs. Amazfit T-Rex

 
One
Grayson
Charge HR
Grayson
TicWatch C2
T-Rex
 FitbitOneRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitCharge HRRemove Buy NowMichael KorsGraysonRemove Buy NowMobvoiTicWatch C2Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$350$150$350$200$140
Release201220182015201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days24 hours5 days24 hours2 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454NA453x454360 x 360360 x 360
Sizen/a1.39 inchesNA1.39 inches1.3 inches1.3 inches
TouchNA
TypeOLEDAMOLEDOLEDAMOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant1 ATM1 ATM1 ATMIP685 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNAAndroid WearWear OSBuild-in
Apps
Music

All Wearables