Sony SmartBand 2 vs. ASUS ZenWatch 3 vs. Polar A370 vs. Xiaomi Mi Band 4

 
SmartBand 2
ZenWatch 3
A370
Mi Band 4
 SonySmartBand 2Remove Buy NowASUSZenWatch 3Remove Buy NowPolarA370Remove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$130$229$179.95$25
Release2015201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days48 hoursUp to 3 days20 days
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a400 x 400160 x 80120x240
Sizen/a1.39 inches1.18 inches0.95 inches
Touchn/a
Typen/aAMOLEDTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP58WR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2AMAZFIT OS
Apps
Music

All Wearables