Polar M400 vs. Garmin Vivosmart HR vs. Polar Loop 2 vs. Amazfit Stratos vs. Fitbit Versa

 
M400
Vivosmart HR
Loop 2
Stratos
Versa
 PolarM400Remove Buy NowGarminVivosmart HRRemove Buy NowPolarLoop 2Remove Buy NowAmazfitStratosRemove Buy NowFitbitVersaRemove Buy Now

Basic Info

Suggested Price$200$170$120$199$199.99
Release20142015201520182018

Activity & Fitness

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

Battery

Duration8 hours to 30 days5 days8 days (without notifications)5 days4 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a160 x 68n/a320 x 300300 x300
Sizen/a1.08 inchesn/a1.34 inches1.34 inches
Touch
Typen/an/aLEDOLEDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM5 ATM2 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aProprietary
Apps
Music

All Wearables