Polar V800 vs. Moov Now vs. Sony SmartBand 2 vs. Xiaomi Mi Band 4

 
V800
Now
SmartBand 2
Mi Band 4
 PolarV800Remove Buy NowMoovNowRemove Buy NowSonySmartBand 2Remove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$470$79$130$25
Release2014201520152019

Activity & Fitness

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

Battery

Duration13 hours to 30 days6 months2 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a120x240
Sizen/an/an/a0.95 inches
Touchn/an/a
Typen/an/an/aAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibrationn/a
Voice

Hardware

Accelerometer
Barometer or Altimetern/a
Ultraviolet Sensor
Water Resistance3 ATMn/aIP585 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aAMAZFIT OS
Apps
Music

All Wearables