The Polar M400 now comes with the ability to measure your speed and distance based on the movement of your wrist with the built-in accelerometer – a handy feature when running indoors or in places with limited GPS signals.
New languages
M400 is now also available in three new languages. From now on speakers of Czech, Turkish and Indonesian can use the M400 in their own languages.
This release also includes some bug fixes improving quality.
Older M400 release notes are available here.