Fitbit Alta vs. Apple Watch vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Fitbit Sense 2

 
Alta
Watch
Flex
On Full Guard 2.5
Sense 2
 FitbitAltaRemove Buy NowAppleWatchRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowFitbitSense 2Remove Buy Now

Basic Info

Suggested Price$130$349$100$325$300
Release20162015201320182022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours5 days4 days6 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312NA454x454336x336
Sizen/a1.5 inches or 1.65 inchesNA1.39 inches1.59 inches
Touchn/aNA
TypeOLEDAMOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/aIPX71 ATM3 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aWatch OSNAWear OS
Apps
Music

All Wearables