Polar M400 vs. ASUS ZenWatch 3 vs. Fitbit Ionic vs. Motorola Moto 360 (1st Gen) vs. Fitbit Alta HR

 
M400
ZenWatch 3
Ionic
Moto 360 (1st Gen)
Alta HR
 PolarM400Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitIonicRemove Buy NowMotorolaMoto 360 (1st Gen)Remove Buy NowFitbitAlta HRRemove Buy Now

Basic Info

Suggested Price$200$229$299$150$150
Release20142017201720142017

Activity & Fitness

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

Battery

Duration8 hours to 30 days48 hours4+ days1 day7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a400 x 400348x250320 x 260128 x 36
Sizen/a1.39 inches1.421.56 inches1.4 inches
Touch
Typen/aAMOLEDOLEDLCDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM50mIP67

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2Fitbit OSAndroid Wear
Apps
MusicNA

All Wearables