Polar M400 vs. Huawei Watch 2 vs. Garmin 645 Music vs. Pebble Time 2 vs. Fitbit Flex

 
M400
Watch 2
645 Music
Time 2
Flex
 PolarM400Remove Buy NowHuaweiWatch 2Remove Buy NowGarmin645 MusicRemove Buy NowPebbleTime 2Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$200$350$450$199$100
Release20142017201820162013

Activity & Fitness

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

Battery

Duration8 hours to 30 days48 hours7 days10 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a480 x 480240 x 240NANA
Sizen/a1.38 inches1.2 inchesNANA
TouchNA
Typen/aP-OLEDMIPe-paperLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP685 ATM3 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2Pebble OSNA
Apps
Music

All Wearables