Of all the activity trackers, the Link appears to be the most accurate at tracking calories burned. To track that data though, you have to pay for a $6.95-a-month subscription for the online ...

If walking is your main form of physical activity, see how activity trackers can help you set and achieve your fitness goals.

The black and silver versions of the smart ring are on sale for $297, while the brushed silver and dark gray colors are on ...

Meet the latest lightweight, screen-free fitness tracker built for passive health monitoring in this Amazfit Helio Strap ...

High-tech fitness and activity trackers all share one thing: an accelerometer. Here’s how they work — and don’t. Accelerometers record changes in motion relative to the device: up and down ...

Some activity trackers, such as the Garmin Vivofit ($129.99), work with an optional chest strap monitor ($169.99 for the bundle). THEY TRACK SLEEP, TOO.

The Withings Pulse: Best activity tracker for tracking sleep Don’t let this unassuming black rectangle fool you — it’s packed with some nice features. First off, the Pulse holds a charge for ...

Designed to track activity, heart rate, and sleep, the ring can be worn 24/7, even in the shower. The Motiv ring started shipping in September and costs $199.

The activity tracker can also be distracting with its audible reminders to get up and move or telling you to drink more water. After a while, you may just decide to turn it off and throw it in a ...

An activity tracker with the heart of a smartwatch Now there's the Vivosmart, an activity tracker that can receive vibration alerts for phone calls, text messages and emails from your smartphone.

Leapfrog's LeapBand is a virtual pet gaming device merged with a fitness tracker that motivates kids to move using activity challenges and rewards. The more active they are, the more rewards they ...