![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/41YuaGeY63L._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingTHREE%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA15%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.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 M400 Cable, BoxWave® [Colorific Magnetic Mini Cable] Colorful Mini Micro USB Cable for Polar M400, A360, V650 - Cosmo Pink : Amazon.ca: Electronics Polar M400 Cable, BoxWave® [Colorific Magnetic Mini Cable] Colorful Mini Micro USB Cable for Polar M400, A360, V650 - Cosmo Pink : Amazon.ca: Electronics](https://m.media-amazon.com/images/I/71IEH8MKnLL._AC_SY355_.jpg)
Polar M400 Cable, BoxWave® [Colorific Magnetic Mini Cable] Colorful Mini Micro USB Cable for Polar M400, A360, V650 - Cosmo Pink : Amazon.ca: Electronics
![3.8V Battery Core for POLAR M430 M400 GPS Sports Watch New Li Polymer Rechargeable Accumulator Replacement+USB cable+toolkit|Mobile Phone Batteries| - AliExpress 3.8V Battery Core for POLAR M430 M400 GPS Sports Watch New Li Polymer Rechargeable Accumulator Replacement+USB cable+toolkit|Mobile Phone Batteries| - AliExpress](https://ae01.alicdn.com/kf/S6c0f3fe403c74b71a9ea61a2f0f76130G/3-8V-Battery-Core-for-POLAR-M430-M400-GPS-Sports-Watch-New-Li-Polymer-Rechargeable-Accumulator.jpg_Q90.jpg_.webp)
3.8V Battery Core for POLAR M430 M400 GPS Sports Watch New Li Polymer Rechargeable Accumulator Replacement+USB cable+toolkit|Mobile Phone Batteries| - AliExpress
![Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET](https://www.cnet.com/a/img/hub/2014/11/18/97390ec4-0385-495c-bcf4-4496555bb14c/polar-m400-product-photos-09.jpg)
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
![100pcs Micro Usb Mini Connector 5pin Dip2 7.2mm Short Pin 5p Data Port Charging Port Mini Usb Connector For Mobile End Plug - Connectors - AliExpress 100pcs Micro Usb Mini Connector 5pin Dip2 7.2mm Short Pin 5p Data Port Charging Port Mini Usb Connector For Mobile End Plug - Connectors - AliExpress](https://ae01.alicdn.com/kf/HTB1R84OldzJ8KJjSspkq6zF7VXa1.jpg)