A QUICK GLANCE

Pair your phone with M400 and get alerts for incoming calls, received messages and push notifications from social media apps to your wrist and stay in the know wherever you are.

DON'T MISS A THING

See incoming calls and texts at a glance. Answer calls using your watch or decline them when training demands it.

KEEP UP TO DATE

Read messages conveniently on the M400's display even when your phone is not at hand.

BE WHERE YOU NEED TO BE

M400 alerts you about the appointments on your calendar and makes sure you're always on time.

STAY SOCIAL

Receive push notifications from social media apps to your wrist and stay in the know wherever you are.

New personal bests

Surpass yourself with M400’s individual training targets, Smart Coaching features and timers. The M400 knows when you’ve outdone yourself and lets you know it, too.

TRAINING LOAD

Shows you how your training affects your body and helps you compare the load of different sessions. Monitor your load continuously to recognize your personal limits and adjust training intensity and duration accordingly. Available on the Polar Flow web service.

RECOVERY STATUS

Shows you the time necessary for recovery before the next training session. Available on the Polar Flow web service.

FITNESS TEST

A five-minute test that measures aerobic fitness from your resting heart rate, heart rate variability and your background information. Complete the test regularly to see the progress you’re making.

RUNNING INDEX

Shows how your running performance is developing.

TRAINING BENEFIT

Delivers motivating feedback immediately after training describing the effect of the session.

SMART CALORIES

Lets you know exactly how many calories you’ve burned based on your weight, height, age, gender, your individual maximum heart rate (HRmax) and how hard you’re training.

ACTIVITY GUIDE

Shows how active you’ve been during the day and gives practical guidance for reaching your daily activity goal.

ACTIVITY BENEFIT

Gives feedback on your daily, weekly and monthly activity, showing how your active 

choices help you stay healthy.

RUNNING PROGRAM

Train for a running event with a personal and adaptive training plan in Polar Flow. Choose from four different targets, 5K, 10K, half marathon and marathon, and get a training plan that fits you and your goals.