Polar M400 vs. Fitbit Ionic vs. LG Watch Style vs. Garmin Vivofit 4 vs. Polar A370

 
M400
Ionic
Watch Style
Vivofit 4
A370
 PolarM400Remove Buy NowFitbitIonicRemove Buy NowLGWatch StyleRemove Buy NowGarminVivofit 4Remove Buy NowPolarA370Remove Buy Now

Basic Info

Suggested Price$200$299$249$79.95$179.95
Release20142017201720182017

Activity & Fitness

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

Battery

Duration8 hours to 30 days4+ days1 yearUp to 3 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a348x250360 x 36088 x 88160 x 80
Sizen/a1.421.2 inchesNA1.18 inches
Touch
Typen/aOLEDP-OLEDNATFT LCD

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM50mIP675 ATMWR30

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSAndroid Wear 2
Apps
Music

All Wearables