Fitbit Alta vs. Garmin Forerunner 935 vs. Garmin 645 Music vs. Fitbit Flex vs. Fitbit Sense 2

 
Alta
Forerunner 935
645 Music
Flex
Sense 2
 FitbitAltaRemove Buy NowGarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowFitbitSense 2Remove Buy Now

Basic Info

Suggested Price$130$500$450$100$300
Release20162017201820132022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 daysUp to 2 weeks7 days5 days6 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240240 x 240NA336x336
Sizen/a1.2 inches1.2 inchesNA1.59 inches
Touchn/aNA
TypeOLEDLCDMIPLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aNA
Apps
Music

All Wearables