![Amazon.com: MOTONG Silicone Protective Case Cover Shell for Polar M400 M430 (Silicone Black) : Electronics Amazon.com: MOTONG Silicone Protective Case Cover Shell for Polar M400 M430 (Silicone Black) : Electronics](https://m.media-amazon.com/images/I/51yw7k0zreL._AC_SX522_.jpg)
Amazon.com: MOTONG Silicone Protective Case Cover Shell for Polar M400 M430 (Silicone Black) : Electronics
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
![Amazon.com: Cable for Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories Amazon.com: Cable for 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_SX425_.jpg)
Amazon.com: Cable for Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories
![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/resize/d1aec225e4e49fad56f32965916af5a2a3059be6/hub/2014/11/18/616b2599-c792-4105-b6c0-f449f8c3ab5f/polar-m400-product-photos-10.jpg?auto=webp&width=768)