USB Charging Cable M400 Charger Compatible with Polar M400, M450, A360, A370, V700 Sports Watch USB Charger Cord - Newegg.com
Polar M400 Cable, BoxWave® [Colorific Magnetic Mini Cable] Colorful Mini Micro USB Cable for Polar M400, A360, V650 - Cosmo Pink : Amazon.ca: Electronics
POLAR M400 | konektor USB, POLAR M400 | POLAR Servis
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
Amazon.com: ReadyWired USB Charging Cable Cord for Polar A360, A370, M400, M450, V700 Fitness Tracker : Electronics
Polar M400 Watch Repair - iFixit
Polar M400 GPS Smart Sport Watch USB Cable Transfer Cord Replacement | eBay
Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories