Fitbit Ionic vs. Casio WSD-F20A vs. Amazfit GTR vs. HTC re Grip

 
Ionic
WSD-F20A
GTR
re Grip
 FitbitIonicRemove Buy NowCasioWSD-F20ARemove Buy NowAmazfitGTRRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$299$399$199$199
Release2017201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days1 day24 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250320 x 320454 x 454160 x 32
Size1.421.32 inches1.39 inches1.8 inches
Touch
TypeOLEDLCDAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWear OSBuild-inNA
Apps
Music

All Wearables