Fitbit Flex 2 vs. Garmin Vivofit 3 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. HTC re Grip

 
Flex 2
Vivofit 3
645 Music
Forerunner 235
re Grip
 FitbitFlex 2Remove Buy NowGarminVivofit 3Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$100$100$450$299.99$199
Release20162016201820172020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 year7 days9 days5 hours to 2.5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a64 x 64240 x 240215 x 180160 x 32
Sizen/a0.55 inches1.2 inches1.23 inches1.8 inches
Touchn/a
TypeLEDn/aMIPMIPPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aNA
Apps
Music

All Wearables