Fitbit Flex 2 vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Sony SmartBand vs. Garmin Vivosmart 4

 
Flex 2
Flex
Vivofit 4
SmartBand
Vivosmart 4
 FitbitFlex 2Remove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowSonySmartBandRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$100$100$79.95$100$130
Release20162013201820142018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days1 year5 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/aNA
Resolutionn/aNA88 x 88NA48 x 128
Sizen/aNANANA0.74 inches
Touchn/aNANA
TypeLEDLEDNANAOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM5 ATMIP585 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANA
Apps
Music

All Wearables