![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/56c5c06e61e9760aaad68b7ae54f2bcdd0a61391/hub/2014/11/18/616b2599-c792-4105-b6c0-f449f8c3ab5f/polar-m400-product-photos-10.jpg?auto=webp&fit=crop&height=675&width=1200)
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
![Amazon.com: Band for Polar V800, Soft Adjustable Silicone Replacement Wrist Watch Band for Polar V800 (No Tracker) : Sports & Outdoors Amazon.com: Band for Polar V800, Soft Adjustable Silicone Replacement Wrist Watch Band for Polar V800 (No Tracker) : Sports & Outdoors](https://m.media-amazon.com/images/I/514eh2JnIxL._AC_SX425_.jpg)
Amazon.com: Band for Polar V800, Soft Adjustable Silicone Replacement Wrist Watch Band for Polar V800 (No Tracker) : Sports & Outdoors
![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/c7c441cb6aaaaaab2c03f0c0e833b6fdf744cccf/hub/2014/11/20/2b4eef50-b6e6-4a90-a19e-755b53f16f30/polarm400.jpg?auto=webp&fit=cover&height=482&width=856)
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
![Polar announces M400 footpod support, also smartphone notifications for V800 /M400/A300 | DC Rainmaker Polar announces M400 footpod support, also smartphone notifications for V800 /M400/A300 | DC Rainmaker](https://media.dcrainmaker.com/images/2015/01/IMG_3981.jpg)