Fitbit Charge 2 vs. Fitbit One vs. Casio WSD-F20A vs. Fitbit Alta HR vs. Fitbit Flex

 
Charge 2
One
WSD-F20A
Alta HR
Flex
 FitbitCharge 2Remove Buy NowFitbitOneRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitAlta HRRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$150$100$399$150$100
Release20162012201820172013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days10-14 days1 day7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a320 x 320128 x 36NA
Sizen/an/a1.32 inches1.4 inchesNA
Touchn/aNA
TypeOLEDOLEDLCDOLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/aSplast Resistant5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aWear OSNA
Apps
Music

All Wearables