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

 
Alta
Charge 2
Watch Series 2
ZenWatch
Series 6
 FitbitAltaRemove Buy NowFitbitCharge 2Remove Buy NowAppleWatch Series 2Remove Buy NowAsusZenWatchRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$130$150$269$150$399
Release20162016201620142020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days18 hoursNANot yet
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a340 x 272 or 390 x 312320 x 320384 x 480
Sizen/an/a1.5 inches or 1.65 inches1.63 inches40mm
Touchn/an/a
TypeOLEDOLEDAMOLEDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistancen/an/a5ATMIP55

Notifications

Phone
Emailsn/aNA
TextsNA

Software

Operating Systemn/an/aWatch OSAndroid WearWatchOS 5
Apps
Music

All Wearables