Tech Review: Polar M400 GPS Running Watch - That Shelf
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 M400 User Manual | Inleiding
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