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

 
Steel
M400
Watch 2
645 Music
Flex
 PebbleSteelRemove Buy NowPolarM400Remove Buy NowHuaweiWatch 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$150$200$350$450$100
Release20142014201720182013

Activity & Fitness

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

Battery

Duration5-7 days8 hours to 30 days48 hours7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a480 x 480240 x 240NA
Size1.26 inchesn/a1.38 inches1.2 inchesNA
TouchNA
Typee-papern/aP-OLEDMIPLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIP685 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/aAndroid Wear 2NA
Apps
Music

All Wearables