Polar - Updates for Flow app Android, M400 and V800 users: - Flow app Android release corrects the activity and training data visibility issue which some of you experienced - firmware updates
M400 product support | Polar Global
Polar M400 review | TechRadar
Polar - Hey Polar M400 iOS users! Smart notifications have arrived! Keep up-to-date wherever you want, with notifications about incoming calls and messages sent straight to your wrist! How to activate smart
Polar M400 gets Smart Notifications with latest update - EyeOnMobility
Polar M400 GPS Sports Watch with Heart Rate Sensor