Is my M400 compatible with earlier Polar software and services?

Applies to: M400

M400 is not compatible with Polar ProTrainer 5 software or the polarpersonaltrainer.com web service. M400 is compatible with the Polar Flow web service, Polar Flow app for iOS (v. 2.1 or newer) and Polar Flow app for Android (v. 2.0 or newer).