Polar M400 vs TomTom Spark 3 Cardio

Polar M400 TomTom Spark 3 Cardio

Basic Info

Wear TypeWristbandWristband

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 YesTomTom Spark 3 Cardio tracks heart rate
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 No
Stairs / Floors Yes NoPolar M400 counts your climbing stairs or floors
Exercise Tagging No YesOnly TomTom Spark 3 Cardio provides exercise tagging
Smart Coach Yes NoPolar M400 provides real time fitness coaching
Goal Setting Yes YesBoth can help with your goals setting
Inactivity Alert Yesn/aPolar M400 helps you stay active with inactivity alert

Additional Features

GPS Yes YesBoth have integrated GPS modules
Compass Non/aBoth don't have 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 NoBoth don't have stopwatch
Music Playback Non/aBoth don't have music playback
ReportsActivity, SleepActivity, Sleep

Smartphone Remote Features

Notifications Yes NoIf you get a phone notification, Polar M400 make an alert for you
Caller ID Yes NoPolar M400 can notify you who is calling
Music Control No YesTomTom Spark 3 Cardio allows control smartphone music player
Call Control Yesn/aPolar M400 allows you control phone calls
Camera Control Non/aBoth don't have camera control
Find Phone Non/aBoth don't have a find phone feature


Duration24 days21 daysPolar M400 battery life is about 1.1 times longer
Battery TypeRechargeable BatteryRechargeable Battery

Physical Specs

Weather Resistance Yes Yes
Waterproof No Yes
IP Rating3 ATMn/a
Weight57 grams50 gramsTomTom Spark 3 Cardio is 7.0 g lighter

User Interface

Display YesLCD Screen
Display Sizen/an/a
Screen Resolution 128 x 128 pixels n/a
Color Display Non/a
Touch Screen Non/a


Android Yes YesBoth compatible with Android devices
iOS Yes YesBoth compatible iOS devices
OS X/Mac Yes NoPolar M400 compatibles with MacBooks and iMacs
Windows Phone Yes NoPolar M400 compatibles with a range of Windows Phone devices
Windows Yes NoPolar M400 allows you to locate your phone
Web Portal Yes YesBoth have access to online web portal
Social Features Yesn/aYou 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

TomTom Spark 3 Cardio