Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Fitbit Versa 2 vs. Garmin VivoActive 4 vs. Apple Watch Ultra

 
Flex
On Full Guard 2.5
Versa 2
VivoActive 4
Watch Ultra
 FitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowFitbitVersa 2Remove Buy NowGarminVivoActive 4Remove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$100$325$199$349$799
Release20132018201920192022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4 days5 days8 days36 hrs
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
ResolutionNA454x454300 x 300260 x 260502x410 pixels
SizeNA1.39 inches1.34 inches1.3ionches1.92 inches
TouchNA
TypeLEDAMOLEDMIP

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM3 ATM5 ATM5 ATM10 ATM (100 Meters)

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWear OSBuild-inWear OSWatchOS 9
Apps
Music

All Wearables