Fitbit Alta vs. Fitbit Flex 2 vs. Apple Watch Series 5 vs. Diesel On Full Guard 2.5 vs. Garmin Forerunner 45

 
Alta
Flex 2
Watch Series 5
On Full Guard 2.5
Forerunner 45
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowAppleWatch Series 5Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$130$100$329$325$199
Release20162016201920182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 daysNot Yet4 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a384 x 480454x454208 x 208
Sizen/an/a1.78 Inches1.39 inches1.04 inches
Touchn/an/a
TypeOLEDLEDMicroLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATMNot Yet3 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aWatchOS 5Wear OSBuilt-in
Apps
Music

All Wearables