Fitbit Flex 2 vs. Garmin Vivosmart HR vs. Amazfit Bip vs. Garmin 645 Music vs. Fitbit Charge HR

 
Flex 2
Vivosmart HR
Bip
645 Music
Charge HR
 FitbitFlex 2Remove Buy NowGarminVivosmart HRRemove Buy NowAmazfitBipRemove Buy NowGarmin645 MusicRemove Buy NowFitbitCharge HRRemove Buy Now

Basic Info

Suggested Price$100$170$99.99$450$150
Release20162015201820182015

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days30 days7 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a160 x 68176 x 176240 x 240NA
Sizen/a1.08 inches1.28 inches1.2 inchesNA
Touchn/aNA
TypeLEDn/aNAMIPOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATMIP685 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aNA
Apps
Music

All Wearables