Fitbit Alta vs. Fitbit Charge 2 vs. Fitbit Flex 2 vs. Diesel On Full Guard vs. Apple Series 6

 
Alta
Charge 2
Flex 2
On Full Guard
Series 6
 FitbitAltaRemove Buy NowFitbitCharge 2Remove Buy NowFitbitFlex 2Remove Buy NowDieselOn Full GuardRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$130$150$100$325$399
Release20162016201620172020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days5 days1 dayNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a454 x 454384 x 480
Sizen/an/an/a1.4 inches40mm
Touchn/an/an/a
TypeOLEDOLEDLEDOMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistancen/an/a5 ATMIP67

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/an/aAndroid Wear 2.0WatchOS 5
Apps
Music

All Wearables