Best fitness trackers

Shortlist and buying guide · the ranked board is on its way

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What to look for

Battery life and a comfortable strap decide whether you keep wearing it.

Models worth comparing

From manufacturers' specifications and published UK reviews, read on 6 October 2026. Not tested by us. In no particular order: these are not ranked, and we do not say which is best until the customer ratings are in.

Budget

Xiaomi Smart Band 10

First-time buyers who want a bright screen, sleep and heart-rate tracking and long battery life for a small outlay.

1.72-inch AMOLED screen rated up to 1,500 nits
Xiaomi claims up to 21 days of battery life in typical use
Over 150 sport modes, 5ATM water resistance and heart-rate tracking while swimming

Watch out for: There is no built-in GPS, so you need your phone with you for distance, and TechRadar found the standard strap's clasp came undone too easily.

Display: 1.72in AMOLED
Battery (claimed): Up to 21 days
GPS: None built in (uses phone)
Water rating: 5ATM
App: Mi Fitness

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Sources: Xiaomi UK product page · TechRadar review

Mid-range

Amazfit Active 3 Premium

Runners and gym-goers who want watch-style tracking with GPS and offline maps without paying big-brand prices.

Built-in GPS using five satellite systems, with offline maps and turn-by-turn directions
1.32-inch AMOLED under sapphire glass, rated up to 3,000 nits
Zepp Coach running plans and a claimed battery life of up to 12 days

Watch out for: It does not detect and start workouts automatically, so you have to remember to begin recording yourself.

Display: 1.32in AMOLED, sapphire glass
Battery (claimed): Up to 12 days typical use
GPS: Built in (five satellite systems)
Water rating: 5ATM
App: Zepp (free)

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Sources: Amazfit UK product page · TechRadar review

Premium

Garmin CIRQA Smart Band

People who want discreet, screen-free health and sleep tracking that feeds into Garmin Connect, especially existing Garmin owners and cyclists.

Screenless band with round-the-clock health and sleep tracking and automatic activity detection
Garmin claims up to 10 days between charges
No subscription needed; coaching extras sit behind the optional Garmin Connect+ plan

Watch out for: It has no GPS of its own and relies on your phone, and it is costly for a band that shows fewer metrics than a full Garmin watch.

Display: None (screenless)
Battery (claimed): Up to 10 days
GPS: Connected GPS only (via phone)
Water rating: 5ATM
App: Garmin Connect, no subscription required

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Sources: Garmin UK product page · TechRadar review

Pro

Garmin Forerunner 170 Music

Runners who want a dedicated GPS training watch with music stored on the wrist, so the phone can stay at home.

Built-in GPS with a choice of GPS-only and all-systems satellite modes
AMOLED display with an optional always-on setting
Stores and plays music on the watch itself

Watch out for: It is mostly a software update on the Forerunner 165 and misses out on Garmin's newest GPS and health-sensor hardware.

Display: AMOLED, optional always-on
GPS: Built in (GPS-only and all-systems modes)
Water rating: 5ATM
Music: On-watch storage and playback
App: Garmin Connect

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Sources: Garmin UK product page · Trusted Reviews review

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