With the routine abuse that most fitness trackers are subjected to, it's a wonder they don't suffer more problems. But as a general rule, most Fitbits operate without a glitch for years.

Fitbit has denied claims ... More than 100 users have taken to official forums to say their Charge 5 devices now do not work properly. One customer told the BBC the update had rendered theirs ...

It has a 1.04-inch OLED screen just like the Charge 5, which is large enough and sharp ... If you fasten the Fitbit Charge 6 strap too tightly, the GPS is liable to not work. This is apparently down ...

Whether you're at the gym or working ... shows not just your heart rate while sleeping, but also your restlessness and estimated oxygen variation. We also love the Fitbit Charge 5's new ECG ...

While it may look and act almost identically to the Charge 5 ... Fitbit Inspire 2 – and probably the best fitness tracker money can buy (not just the best Fitbit tracker). The color screen ...

If your Fitbit Charge 2 isn't working properly ... then press it down again. 4. The screen will flash ALT; release the button for one second, then hold it down again. 5. The Fitbit will vibrate ...

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Visually, the most apparent difference is the Versa sports a larger case and screen ... the Fitbit Charge 6 is your best ...

And no, it didn't give me a rash, despite what comes up if you Google "fitbit rash". As a step counter, the Fitbit Charge HR is solid. It's not ... working out because you can only have the screen ...

A comfortable band, a bright AMOLED screen, built-in GPS ... ever – it's been £79 before – but it's close enough. Fitbit Charge 5: was £169.99 now £129 at Amazon Almost the lowest price ...

The Fitbit Charge 6 has connected music controls on the watch but you have to bring your smartphone with you to use them and they only work with YouTube Music, not Spotify ... 0.9 x 0.5 inches ...