![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
Road Trail Run: Polar Pacer Pro GPS Watch Review: Light, Thin, Long Battery Life. A Complete Training and Everyday Companion
![Amazon.com: Polar Vantage M2 - Advanced Multisport Smart Watch - Integrated GPS, Wrist-Based Heart Monitor Daily Workouts - Sleep and Recovery Tracking - Music Controls, Weather, Phone Notifications : Everything Else Amazon.com: Polar Vantage M2 - Advanced Multisport Smart Watch - Integrated GPS, Wrist-Based Heart Monitor Daily Workouts - Sleep and Recovery Tracking - Music Controls, Weather, Phone Notifications : Everything Else](https://m.media-amazon.com/images/I/41DmEFrbIKL._AC_SY580_.jpg)
Amazon.com: Polar Vantage M2 - Advanced Multisport Smart Watch - Integrated GPS, Wrist-Based Heart Monitor Daily Workouts - Sleep and Recovery Tracking - Music Controls, Weather, Phone Notifications : Everything Else
![Amazon.com: Polar Vantage M2 - Advanced Multisport Smart Watch - Integrated GPS, Wrist-Based Heart Monitor Daily Workouts - Sleep and Recovery Tracking - Music Controls, Weather, Phone Notifications : Everything Else Amazon.com: Polar Vantage M2 - Advanced Multisport Smart Watch - Integrated GPS, Wrist-Based Heart Monitor Daily Workouts - Sleep and Recovery Tracking - Music Controls, Weather, Phone Notifications : Everything Else](https://m.media-amazon.com/images/I/61CluoDRPML.jpg)