Fitbit Alta vs. Asus ZenWatch vs. Casio WSD-F20A vs. Fitbit Flex vs. Apple Series 6

 
Alta
ZenWatch
WSD-F20A
Flex
Series 6
 FitbitAltaRemove Buy NowAsusZenWatchRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$130$150$399$100$399
Release20162014201820132020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 daysNA1 day5 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 320320 x 320NA384 x 480
Sizen/a1.63 inches1.32 inchesNA40mm
Touchn/aNA
TypeOLEDAMOLEDLCDLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistancen/aIP555 ATM1 ATM

Notifications

Phone
Emailsn/aNA
TextsNA

Software

Operating Systemn/aAndroid WearWear OSNAWatchOS 5
Apps
Music

All Wearables