Pebble Time Round vs. Michael Kors Grayson vs. Fitbit Alta HR vs. Jawbone UP2 vs. Michael Kors Grayson vs. Amazfit T-Rex

 
Time Round
Grayson
Alta HR
UP2
Grayson
T-Rex
 PebbleTime RoundRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitAlta HRRemove Buy NowJawboneUP2Remove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$350$150$100$350$140
Release201520182017201520182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days24 hours7 days7 days24 hours20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454128 x 36NA453x454360 x 360
Sizeround1.39 inches1.4 inchesNA1.39 inches1.3 inches
TouchNA
Typee-paperAMOLEDOLEDNAAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX71 ATMSplash resistant1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSAndroid WearNAAndroid WearBuild-in
Apps
Music

All Wearables