Apple Watch Series 3 vs. Polar M400 vs. Fitbit Inspire HR vs. Garmin VivoActive 4 vs. HTC re Grip

 
Watch Series 3
M400
Inspire HR
VivoActive 4
re Grip
 AppleWatch Series 3Remove Buy NowPolarM400Remove Buy NowFitbitInspire HRRemove Buy NowGarminVivoActive 4Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$329$200$99$349$199
Release20172014201920192020

Activity & Fitness

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

Battery

Duration18 hours8 hours to 30 days5 days8 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/a139 x 60260 x 260160 x 32
Size1.5 inches or 1.65 inchesn/a1.4 inches1.3ionches1.8 inches
Touch
TypeAMOLEDn/aOLEDMIPPMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aFitbit OSWear OSNA
Apps
Music

All Wearables