Fitbit Ionic vs. Casio WSD-F20A vs. Pebble Core vs. Polar A370 vs. Apple Watch Series 4

 
Ionic
WSD-F20A
Core
A370
Watch Series 4
 FitbitIonicRemove Buy NowCasioWSD-F20ARemove Buy NowPebbleCoreRemove Buy NowPolarA370Remove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$299$399$99$179.95$329
Release20172018201620172018

Activity & Fitness

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

Battery

Duration4+ days1 dayNAUp to 3 daysNot Yet
Rechargeable

Compatibility

Android
iOSNA
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250320 x 320NA160 x 80384 x 480
Size1.421.32 inchesNA1.18 inches1.78 inches
TouchNA
TypeOLEDLCDNATFT LCDMicroLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATMNAWR30Not Yet

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemFitbit OSWear OSNAWatch OS 5
Apps
Music

All Wearables