Pebble Time Round vs. Polar M600 vs. Fitbit Flex 2 vs. Michael Kors Grayson vs. Fitbit Charge vs. Michael Kors Grayson

 
Time Round
M600
Flex 2
Grayson
Charge
Grayson
 PebbleTime RoundRemove Buy NowPolarM600Remove Buy NowFitbitFlex 2Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitChargeRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$200$330$100$350$130$350
Release201520162016201820142018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days2 days5 days24 hours7-10 days24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240n/a453 x 454NA453x454
Sizeround1.3 inchesn/a1.39 inchesNA1.39 inches
Touchn/an/aNA
Typee-paperTFTLEDAMOLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7IPX85 ATM1 ATM1 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSAndroid Wearn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables