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

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

Basic Info

Suggested Price$130$269$100$325$199
Release20162016201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours5 days4 days7 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312NA454x454208 x 208
Sizen/a1.5 inches or 1.65 inchesNA1.39 inches1.04 inches
Touchn/aNA
TypeOLEDAMOLEDLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5ATM1 ATM3 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aWatch OSNAWear OSBuilt-in
Apps
Music

All Wearables