Polar Loop 2 vs. Basis Peak vs. Casio WSD-F20A vs. Fitbit Flex vs. Garmin Vivofit 4

 
Loop 2
Peak
WSD-F20A
Flex
Vivofit 4
 PolarLoop 2Remove Buy NowBasisPeakRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy Now

Basic Info

Suggested Price$120$200$399$100$79.95
Release20152014201820132018

Activity & Fitness

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

Battery

Duration8 days (without notifications)4 days1 day5 days1 year
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a168 x 144320 x 320NA88 x 88
Sizen/a1.25 inches1.32 inchesNANA
TouchNA
TypeLEDLCDLCDLEDNA

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM5 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNAWear OSNA
Apps
Music

All Wearables