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

 
Alta
Ionic
Flex
On Full Guard 2.5
Watch 7
 FitbitAltaRemove Buy NowFitbitIonicRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$130$299$100$325$429
Release20162017201320182021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days5 days4 days18 Hours
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a348x250NA454x454396 x 484
Sizen/a1.42NA1.39 inches1.9 inches
Touchn/aNA
TypeOLEDOLEDLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a50m1 ATM3 ATMwater resistant but not waterproof

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aFitbit OSNAWear OSWatchOS 8
Apps
Music

All Wearables