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Best smartwatches and fitness trackers for outdoor sports this summer

The weather's getting sunnier and warmer, and if that means you'll be taking your workout to the park, you need a wearable that copes well with outdoor conditions. Discover the features to look out for and the models worth considering.

Garmin Vivosmart 4 vs Fitbit Charge 3: activity trackers put through their paces

Fitbit has launched the latest activity tracker in the Charge range, the Fitbit Charge 3. It’s slim, stylish and comes with a wealth of features. Hot on its heels is Garmin, rivalling the Charge 3 with the Vivosmart 4.

Why are some fitness trackers so inaccurate?

A recent study by the University of British Columbia concluded that Fitbits and other fitness trackers are often highly inaccurate. That’s no surprise to Which?: our tests have exposed devices that leave you with no clear idea of how much activity you’ve done - whether that's steps taken or calories burned.

Which? reviews the £25 Xiaomi Mi Band 3 fitness tracker

The Xiaomi Mi Band 3 activity tracker has a built-in heart-rate tracker, and costs just £25. Does that make it worth buying? Our review reveals all.

Should you pre-order the Fitbit Charge 3 activity tracker?

We take an initial look at the Fitbit Charge 3 activity tracker to find out what features this slim device has. Should you buy it, or opt for a Fitbit alternative?

Reviewed: Lidl’s £25 Silvercrest Fitness & Activity Tracker

We explore the features of the latest cheap Lidl Silvercrest activity tracker. Is this £25 device worth snapping up, or is it a waste of money?

Best wearables and apps for relaxation and better sleep

Could one of these fitness watches, activity trackers or smartwatches help to calm your mind and catch some z's? We take a look at what Apple, Fitbit, Garmin (and others) are doing to help train your mind as well as your body.

Which? reveals two new Best Buy wearables

Five of the latest wearables on test, including Wear OS smartwatches, the Garmin Vivofit 4 activity tracker and Polar M430 fitness watch. Find out how they performed in the tough Which? testing.

Activity trackers for children: Fitbit Ace and Garmin Vivofit Jr 2

We've taken a first look at the Fitbit Ace and Garmin Vivofit Jr 2 activity trackers for children. Could they encourage activity, and completion of chores?

Fitness trackers: £30 Nuband and £470 Garmin reviewed – should you spend more?

Discover the latest devices on test, including trackers and watches from Garmin, Misfit and Nuband. Plus, find out more about how much you need to spend.

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