Pebble Time Round vs. Polar M400 vs. Apple Watch vs. Garmin Forerunner 235 vs. Fitbit Flex

 
Time Round
M400
Watch
Forerunner 235
Flex
 PebbleTime RoundRemove Buy NowPolarM400Remove Buy NowAppleWatchRemove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$200$200$349$299.99$100
Release20152014201520172013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days8 hours to 30 days18 hours9 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a340 x 272 or 390 x 312215 x 180NA
Sizeroundn/a1.5 inches or 1.65 inches1.23 inchesNA
TouchNA
Typee-papern/aAMOLEDMIPLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX73 ATMIPX75 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/aWatch OSNA
Apps
Music

All Wearables