Fitbit Flex 2 vs. Casio WSD-F20A vs. Samsung Galaxy Watch vs. Fitbit Charge 3 vs. HTC re Grip

 
Flex 2
WSD-F20A
Galaxy Watch
Charge 3
re Grip
 FitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowSamsungGalaxy WatchRemove Buy NowFitbitCharge 3Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$100$399$330$150$199
Release20162018201820182020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 day7 days7 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNot yetNA

Connectivity

Bluetooth
CellularNA
GPS
NFCNA
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 320360 x 36066 x 18160 x 32
Sizen/a1.32 inches1.2 inches or 1.3 inches.721 inches1.8 inches
Touchn/a
TypeLEDLCDAMOLEDOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSTizen OSNANA
Apps
MusicSpotify

All Wearables