Fitbit Flex 2 vs. Apple Watch vs. Casio WSD-F20A vs. Pebble Core vs. Polar Loop

 
Flex 2
Watch
WSD-F20A
Core
Loop
 FitbitFlex 2Remove Buy NowAppleWatchRemove Buy NowCasioWSD-F20ARemove Buy NowPebbleCoreRemove Buy NowPolarLoopRemove Buy Now

Basic Info

Suggested Price$100$349$399$99$100
Release20162015201820162013

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration5 days18 hours1 dayNA5 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNANANA
MacNANANA
WindowsNANANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312320 x 320NANA
Sizen/a1.5 inches or 1.65 inches1.32 inchesNANA
Touchn/aNA
TypeLEDAMOLEDLCDNALED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX75 ATMNA2 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aWatch OSWear OSNANA
Apps
Music

All Wearables