Garmin Forerunner 735XT vs. Fitbit Alta vs. Fitbit Ionic vs. Garmin 645 Music vs. Fitbit Flex

 
Forerunner 735XT
Alta
Ionic
645 Music
Flex
 GarminForerunner 735XTRemove Buy NowFitbitAltaRemove Buy NowFitbitIonicRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$450$130$299$450$100
Release20162016201720182013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days5 days4+ days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution215 x 180n/a348x250240 x 240NA
Size1.23 inchesn/a1.421.2 inchesNA
Touchn/an/aNA
Typen/aOLEDOLEDMIPLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a50m5 ATM1 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aFitbit OSNA
Apps
Music

All Wearables