Pebble Time Round vs. Polar M400 vs. Polar Loop 2 vs. Fitbit Flex vs. Pebble Core

 
Time Round
M400
Loop 2
Flex
Core
 PebbleTime RoundRemove Buy NowPolarM400Remove Buy NowPolarLoop 2Remove Buy NowFitbitFlexRemove Buy NowPebbleCoreRemove Buy Now

Basic Info

Suggested Price$200$200$120$100$99
Release20152014201520132016

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heartn/an/a
Oxygen
SleepNA
Steps
Swim

Battery

Duration2 days8 hours to 30 days8 days (without notifications)5 daysNA
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/an/aNANA
Sizeroundn/an/aNANA
TouchNANA
Typee-papern/aLEDLEDNA

Functions

Audio SpeakerAlerts only
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX73 ATM2 ATM1 ATMNA

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemPebble OSn/an/aNANA
Apps
Music

All Wearables