Samsung Gear S2 vs. Michael Kors Grayson vs. Fitbit Charge 3 vs. Sony SmartBand vs. Michael Kors Grayson vs. Amazfit T-Rex

 
Gear S2
Grayson
Charge 3
SmartBand
Grayson
T-Rex
 SamsungGear S2Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitCharge 3Remove Buy NowSonySmartBandRemove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$300$350$150$100$350$140
Release201520182018201420182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2-3 days24 hours7 days5 days24 hours20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/aNA
Windowsn/aNot yetNA

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFCNA
Wi-Fi

Display

ColorNA
Resolution360 x 360453 x 45466 x 18NA453x454360 x 360
Size1.2 inches1.39 inches.721 inchesNA1.39 inches1.3 inches
TouchNA
TypeSuper AMOLEDAMOLEDOLEDNAAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP681 ATM5 ATMIP581 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenAndroid WearNANAAndroid WearBuild-in
Apps
Music

All Wearables