Pebble Time Round vs. Polar M400 vs. ASUS ZenWatch 3 vs. Fitbit Flex vs. Amazfit GTS

 
Time Round
M400
ZenWatch 3
Flex
GTS
 PebbleTime RoundRemove Buy NowPolarM400Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitFlexRemove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$200$200$229$100$150
Release20152014201720132019

Activity & Fitness

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

Battery

Duration2 days8 hours to 30 days48 hours5 days14 days
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a400 x 400NA348 x 442
Sizeroundn/a1.39 inchesNA1.65 inches
TouchNA
Typee-papern/aAMOLEDLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX73 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/aAndroid Wear 2NAWear OS
Apps
Music

All Wearables