Date & Time Settings in POLAR M430 - How to Change Date in POLAR Smartwatch - YouTube
My polar m400 says something went... - Dawn Melohn Davis | Facebook
StavrosMeL on Twitter: "Suddenly, my Polar M400 lost all of its contrast! Contacted the national office and told me to send it over and they'll give me an estimation (€€!!) @PolarGlobal are
Polar Vantage M Multisport GPS Watch In-Depth Review | DC Rainmaker
Polar M400 GPS Sports Watch without Heart Rate Monitor, Black : Amazon.ca: Electronics