Fitbit Ionic vs. Apple Watch vs. Casio WSD-F20A vs. Fitbit Flex vs. Pebble Core

 
Ionic
Watch
WSD-F20A
Flex
Core
 FitbitIonicRemove Buy NowAppleWatchRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowPebbleCoreRemove Buy Now

Basic Info

Suggested Price$299$349$399$100$99
Release20172015201820132016

Activity & Fitness

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

Battery

Duration4+ days18 hours1 day5 daysNA
Rechargeable

Compatibility

Android
iOSNA
Windows PhoneNANANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250340 x 272 or 390 x 312320 x 320NANA
Size1.421.5 inches or 1.65 inches1.32 inchesNANA
TouchNANA
TypeOLEDAMOLEDLCDLEDNA

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50mIPX75 ATM1 ATMNA

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemFitbit OSWatch OSWear OSNANA
Apps
Music

All Wearables