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All ASUS ZenWatch vs. ASUS ZenWatch 3 vs. Fitbit Charge 2 vs. Fitbit Versa 4 vs. Microsoft Band 2 vs. Polar M400 vs. Polar Unite
ASUS ZenWatch ASUS ZenWatch 3 Fitbit Charge 2 Fitbit Versa 4 Microsoft Band 2 Polar M400 Polar Unite

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Price and Release Date

Suggested Price$150$229$150$300$250$200$150
Release / Update2014201720162022201520142020

Activity & Fitness

Calories
Distance
Heart
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate

Battery

Duration485 days6 days48 hours (without GPS)8 hours3 days
Rechargeable

Compatibility Support

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

Connectivity Support

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320400 x 40040,5x40,5 320 x 128128x128240 x 240
Size1.63 inches1.39 inches1,58 inches1.36 inches1.7 inches
Touchn/a
TypeAMOLEDAMOLEDOLEDAMOLEDCapacitative TFTLCDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP555 ATM (50 Meters)IPX73 ATM3 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearAndroid Wear 2n/aFitbit OSn/aBuilt-in
Apps
Music

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