Fitbit Flex 2 vs. Fitbit Ionic vs. Garmin Fenix 5 vs. Garmin 645 Music

 
Flex 2
Ionic
Fenix 5
645 Music
 FitbitFlex 2Remove Buy NowFitbitIonicRemove Buy NowGarminFenix 5Remove Buy NowGarmin645 MusicRemove Buy Now

Basic Info

Suggested Price$100$299$599.99$450
Release2016201720172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days2 Weeks7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a348x250240 x 240240 x 240
Sizen/a1.421.2 inches1.2 inches
Touchn/a
TypeLEDOLEDnaMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m10 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OS
Apps
Music

All Wearables