Fitbit Alta HR vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Apple Watch 7 vs. Apple Watch Ultra

 
Alta HR
Flex
On Full Guard 2.5
Watch 7
Watch Ultra
 FitbitAlta HRRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAppleWatch 7Remove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$150$100$325$429$799
Release20172013201820212022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days5 days4 days18 Hours36 hrs
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution128 x 36NA454x454396 x 484502x410 pixels
Size1.4 inchesNA1.39 inches1.9 inches1.92 inches
TouchNA
TypeOLEDLEDMicroLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM3 ATMwater resistant but not waterproof10 ATM (100 Meters)

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWear OSWatchOS 8WatchOS 9
Apps
Music

All Wearables