Fitbit Ionic vs. Apple Watch vs. Casio WSD-F20A vs. Fitbit Charge vs. Amazfit GTS

 
Ionic
Watch
WSD-F20A
Charge
GTS
 FitbitIonicRemove Buy NowAppleWatchRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitChargeRemove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$299$349$399$130$150
Release20172015201820142019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days18 hours1 day7-10 days14 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250340 x 272 or 390 x 312320 x 320NA348 x 442
Size1.421.5 inches or 1.65 inches1.32 inchesNA1.65 inches
TouchNA
TypeOLEDAMOLEDLCDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50mIPX75 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWatch OSWear OSNAWear OS
Apps
Music

All Wearables