![Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories](https://m.media-amazon.com/images/I/71aeP0IbuhL._AC_UF894,1000_QL80_.jpg)
Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories
Polar - Incoming! Android Smart Notifications are now available on Polar M400! More info & how to activate here: http://updates.polar.com/ | Facebook
![Polar upgrades for V800, M400 and Flow - Correr una Maratón - Review of Garmin, Polar, Suunto, COROS... Polar upgrades for V800, M400 and Flow - Correr una Maratón - Review of Garmin, Polar, Suunto, COROS...](https://media.correrunamaraton.com/wp-content/uploads/2015/04/actualizacion-polar-1.41.jpg)