Polar M400 vs Suunto Ambit3 Sport HR

Polar M400 Suunto Ambit3 Sport HR

Basic Info

Wear TypeWristbandWristband
Price$18000$21600Polar M400 is 120% cheaper

Activity & Fitness

Activity Yes YesBoth track daily activity
Calories Yes YesBoth show estimated calories burned
Sleep Yes YesBoth track sleep pattern
Heart Rate / Pulse No YesSuunto Ambit3 Sport HR has the heart rate monitoring sensor
External HR Monitor Yes No
VO2 Max Yes NoPolar M400 shows the maximum volume of oxygen you can consume per minute
Distance Yes YesBoth track your stride length
Steps Yes YesBoth track and count your steps
Pace Yes Yes
Speed No Yes
Stairs / Floors Yes NoPolar M400 has built-in altimeter for elevation feature
Exercise Tagging No YesOnly Suunto Ambit3 Sport HR provides exercise tagging
Smart Coach Yes NoPolar M400 provides real time fitness coaching
Goal Setting Yes NoSet and keep your own daily or weekly goals with Polar M400
Inactivity Alert Yes NoPolar M400 helps you stay active with inactivity alert

Additional Features

GPS Yes YesBoth have integrated GPS modules
Navigation No YesSuunto Ambit3 Sport HR has onboard GPS navigation
Compass No YesSuunto Ambit3 Sport HR has a compass
Watch / Clock Yes YesBoth have watch
Alarm Clock Yes YesBoth have alarm clock
Reminders Yes NoPolar M400 has a reminder option
Stopwatch No YesSuunto Ambit3 Sport HR has a stopwatch
Music Playback No NoBoth don't have music playback
ReportsActivity, SleepActivity, Sleep

Smartphone Remote Features

Notifications Yes YesBoth show smartphone notifications
Caller ID Yes YesBoth show caller ID notification
Music Control No NoBoth don't have phone music control
Call Control Yes NoPolar M400 allows you control phone calls
Camera Control No NoBoth don't have camera control
Find Phone No NoBoth don't have a find phone feature


Duration24 days14 daysPolar M400 battery life is about 1.7 times longer
Battery TypeRechargeable BatteryRechargeable Battery

Physical Specs

Weather Resistance Yes Yes
Waterproof No No
IP Rating3 ATM5 ATM
Weight57 grams80 gramsPolar M400 is 23.0 g lighter

User Interface

Display Yes Yes
Display Sizen/an/a
Screen Resolution 128 x 128 pixels 128 x 128 pixels
Color Display No No
Touch Screen No No


Android Yes YesBoth compatible with Android devices
iOS Yes YesBoth compatible iOS devices
OS X/Mac Yes YesBoth compatible MAC OS X laptops and PCs
Windows Phone Yes NoPolar M400 compatibles with a range of Windows Phone devices
Windows Yes YesBoth can help find your smartphone
Web Portal Yes NoPolar M400 allows you upload and view data on the online portal
Social Features Yes NoYou can integrate Polar M400 with social networks and share information


Bluetooth Yes YesBoth have Bluetooth data transfer technology
Wi-Fi No NoBoth don't have Wi-Fi connection
NFC No NoBoth don't have NFC connectivity
ANT+ No NoBoth don't provide ANT+ wireless technology
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Polar M400

Suunto Ambit3 Sport HR