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Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
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Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - Micro USB Keychain Charger, Key Ring Micro USB Cable for Polar M400 - Jet Black : Electronics
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MultiCharge Polar M400 MicroUSB Cable - Multiple Charging Cable Micro USB Cable (Polyurethane Cable) – BoxWave
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Amazon.com: TUSITA Charger Compatible with Polar M430 GPS Watch - USB Charging Cable 100cm - GPS Smartwatch Accessories : Cell Phones & Accessories
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Usb Charging Cable Polar Watch | Charger Polar Watch M430 | Charge Cable Polar M430 - Smart Accessories - Aliexpress
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Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - Micro USB Keychain Charger, Key Ring Micro USB Cable for Polar M400 - Jet Black : Electronics
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USB Charging Cable M400 Charger Compatible with Polar M400, M450, A360, A370, V700 Sports Watch USB Charger Cord - Newegg.com
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