Image of a A360
Image of a Charge 3
Image of a A370
Image of a Versa 2
Image of a Mi Band 4
 PolarA360Remove Buy NowFitbitCharge 3Remove Buy NowPolarA370Remove Buy NowFitbitVersa 2Remove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$200$150$179.95$199$25
Release20152018201720192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration12 days7 daysUp to 3 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution160 x 8066 x 18160 x 80300 x 300120x240
Size1.18 inches.721 inches1.18 inches1.34 inches0.95 inches
Touch
Typen/aOLEDTFT LCDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceWR305 ATMWR305 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNABuild-inAMAZFIT OS
Apps
Music

All Wearables