Fitbit Alta HR vs. Fitbit Charge vs. Fitbit Flex vs. Apple Watch Ultra vs. Fitbit Sense 2

 
Alta HR
Charge
Flex
Watch Ultra
Sense 2
 FitbitAlta HRRemove Buy NowFitbitChargeRemove Buy NowFitbitFlexRemove Buy NowAppleWatch UltraRemove Buy NowFitbitSense 2Remove Buy Now

Basic Info

Suggested Price$150$130$100$799$300
Release20172014201320222022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days7-10 days5 days36 hrs6 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution128 x 36NANA502x410 pixels336x336
Size1.4 inchesNANA1.92 inches1.59 inches
TouchNANA
TypeOLEDOLEDLEDAMOLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM1 ATM10 ATM (100 Meters)5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNANAWatchOS 9
Apps
Music

All Wearables