Watch Series 2
Charge 3
Watch
M400
 AppleWatch Series 2Remove Buy NowFitbitCharge 3Remove Buy NowHuaweiWatchRemove Buy NowPolarM400Remove Buy Now

Basic Info

Suggested Price$269$150$349$200
Release2016201820152014

Activity & Fitness

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

Battery

Duration18 hours7 daysn/a8 hours to 30 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/a
WindowsNot yetn/a

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 31266 x 18400 x 400n/a
Size1.5 inches or 1.65 inches.721 inches1.4 inchesn/a
Touch
TypeAMOLEDOLEDAMOLEDn/a

Functions

Audio Speakern/aAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5ATM5 ATMn/a3 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSNAAndroid Wearn/a
Apps
Musicn/a

All Wearables