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Buying guide: choosing a fitness tracker

A fitness tracker is chosen mainly on battery life, water resistance and the quality of its phone connection. These three points separate recent models far more clearly than design or advertised features.

What to check

Battery life, to forget the charger This criterion measures the number of days the tracker lasts on a full charge. A higher figure is better: a tracker that lasts longer needs less frequent charging and keeps tracking activity without interruption, including overnight sleep tracking. Across recent listings, the weakest models last two days less than the median, while the best models clearly exceed that median. On the product page, a longer bar signals more comfortable day to day battery life. Market median: 7 day(s)
Water resistance, for showers and pools This criterion measures the tracker’s resistance to water and water pressure, expressed in ATM. A higher value means the tracker withstands deeper immersion, useful for swimming or diving in addition to rain and showers. Recent listings show a marked gap between the least resistant models and the market median, with the best models already reaching that median level. On the product page, a longer bar indicates better tolerance to water at depth. Market median: 10 ATM
Connectivity, for a stable link This criterion measures the Bluetooth version built into the tracker. A more recent version generally means a faster, more stable connection to the phone, with fewer dropouts when syncing data or receiving notifications. The gap between the oldest models and the market median stays modest, and the best models already match that median. On the product page, a longer bar signals a more reliable daily link, particularly for calls or notifications shown in real time. Market median: 5.4
Care and daily use A fitness tracker is set up by pairing the device with an app on the phone, then worn continuously on the wrist to track activity and sleep. Maintenance is limited to regularly cleaning the band and sensors, and recharging periodically depending on the model’s battery life. It is also worth checking the tracker’s compatibility with the phone’s operating system before buying, since some features depend on this compatibility.

Benchmarks based on 30 recent market listings, collected on 11 October 2026.

What you get for each budget

Under €30

At this price level, battery life and water resistance remain decent but connectivity can sit below the market median.

€30 to €70

This range brings together trackers often close to the median on battery life and water resistance, with connectivity sometimes reaching the best recorded levels.

Over €70

Above this threshold, models more consistently reach the best levels recorded for battery life, water resistance and connectivity.

Frequent mistakes

Choosing only on design without checking the battery life shown on the product page.
Forgetting that water resistance, measured in ATM, does not guarantee the same performance across all water activities.
Ignoring the Bluetooth version, which directly affects connection stability with the phone.
Comparing prices without checking that the trackers share comparable specifications.

Models in this category

Best rated first, among those our merchants offer.

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