Fitbit Alta vs. Apple Watch Series 2 vs. Asus ZenWatch vs. Fitbit Flex vs. Apple Series 6

 
Alta
Watch Series 2
ZenWatch
Flex
Series 6
 FitbitAltaRemove Buy NowAppleWatch Series 2Remove Buy NowAsusZenWatchRemove Buy NowFitbitFlexRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$130$269$150$100$399
Release20162016201420132020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hoursNA5 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312320 x 320NA384 x 480
Sizen/a1.5 inches or 1.65 inches1.63 inchesNA40mm
Touchn/aNA
TypeOLEDAMOLEDAMOLEDLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistancen/a5ATMIP551 ATM

Notifications

Phone
Emailsn/aNA
TextsNA

Software

Operating Systemn/aWatch OSAndroid WearNAWatchOS 5
Apps
Music

All Wearables