When people ask me what the best fitness tracker is, I usually respond by asking which activities they do. Those who are counting their steps for the first time and don't adhere to a workout schedule ...

Dan Graziano is an associate editor for CNET. His work has appeared on BGR, Fox News, Fox Business, and Yahoo News, among other publications. When he isn't tinkering with the latest gadgets and gizmos ...

Dan Graziano is an associate editor for CNET. His work has appeared on BGR, Fox News, Fox Business, and Yahoo News, among other publications. When he isn't tinkering with the latest gadgets and gizmos ...

The Polar M400 is the companies' second activity tracking GPS watch, behind the much more costly V800 multisport watch. The M400 is mainly targeted at runners, although it does have a couple of other ...

To run, you need the right pair of shoes on your feet – you won’t go out without them. But there’s another runner’s companion that’s equally essential to your kit. The Polar M400 smart watch combines ...

The new $200 Polar M400 runner’s watch combines the best of GPS and 24/7 activity tracking with advanced sports technology using Bluetooth Smart. The water-resistant M400 can track important training ...

Bang for your buck, the Polar M400 is a fantastic option for anyone looking for a wearable that offers a complete picture of everyday activity and training. If you’re a serious cyclist there are ...

The Polar M400 is a GPS-enabled running and cycling watch that can be paired with a heart rate strap to track your pulse as you exercise. You can also use the M400 as a daily activity tracker to log ...

The Polar M400 fitness tracker logs your outdoor runs with GPS and measures how much activity you get all day long. It's a compelling choice for runners, but a little too chunky to work as an all-day ...

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology. Design and Display The Polar M400 has a very basic ...