Polar M400 vs. Huawei Watch 2 vs. Garmin 645 Music vs. Fitbit Flex vs. LG G Watch R

 
M400
Watch 2
645 Music
Flex
G Watch R
 PolarM400Remove Buy NowHuaweiWatch 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowLGG Watch RRemove Buy Now

Basic Info

Suggested Price$200$350$450$100$300
Release20142017201820132014

Activity & Fitness

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

Battery

Duration8 hours to 30 days48 hours7 days5 days2 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNAn/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a480 x 480240 x 240NA320 x 320
Sizen/a1.38 inches1.2 inchesNA1.3 inches
TouchNA
Typen/aP-OLEDMIPLEDP-OLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP685 ATM1 ATMIP67

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2NAAndroid Wear
Apps
Music

All Wearables