Amazfit T-Rex Overview: Robust Sufficient

Huami’s first ruggedised smartwatch brings its reasonably priced health monitoring smarts to the good outside, with the intriguingly-named Amazfit T-Rex.

Borrowing from the likes of the Amazfit GTR and Amazfit Stratos 3, the T-Rex is one other of the corporate’s circular-faced smartwatches, nevertheless, this time it is encased in a toughened polycarbonate physique and boasts MIL-STD-810G certification, in addition to intensive battery life that is rated for as much as 20-days of normal use.

Design & construct

Contemplating the T-Rex is supposed for put on throughout actions like climbing and climbing within the wilds, it actually appears to be like the half. The selection of polycarbonate over chrome steel or titanium clearly retains prices down but in addition ensures the watch stays (perhaps too) light-weight and but surprisingly hard-wearing – repelling seen scratches and dings after an prolonged interval of wear and tear.

The flip facet is that this plastic construct simply is not as premium as what’s obtainable on rivals from the likes of Suunto or Garmin, giving it a toy-like look to some extent, just like that of Casio’s G-Shock G100, for instance.

The 4 etched steel {hardware} buttons (two on both facet of the casing) function a slight click on that is pronounced sufficient to really feel by thick gloves, which is appreciated, whereas the again is extra polycarbonate, though in distinction to the angular exterior it is rounded to sit down extra comfortably in opposition to the wrist.

That MIL-STD-810G certification means Huami has examined to T-Rex and confirmed that it could possibly proceed to perform in each very popular (as much as 70°C) and chilly (right down to -40°C) environments, in addition to stand up to excessive humidity and pressurised salt-water jets for prolonged intervals.

Maybe one of many strangest elements of the T-Rex’s design is its strap. The truth that it makes use of each a proprietary design and that it is non-removable is not excellent (even when it does really feel safe), however it’s the fabric chosen that actually stands out.

The silicone at play incorporates a shocking quantity of elasticity, a lot in order that it comes throughout as low-cost on first impressions, however in follow provides excellent consolation and suppleness in precisely the types of conditions the T-Rex was meant for. Whether or not you are scaling a rock face or just working laborious on the elliptical on the fitness center, for such a cumbersome watch, the T-Rex feels deceptively unobtrusive and cozy on the wrist.

There isn’t any microphone or speaker setup on the T-Rex, so voice assistant help is not on the desk, nevertheless, an built-in vibration motor does permit for silent alarms, which show helpful.

Associated: Greatest smartwatches 2020

Huami has leant into the T-Rex’s rugged aesthetics with regards to color choices, with the Rock Black mannequin we examined being simply one in all 5 colourways to select from. All function a black bezel across the watch’s round show however include matching casing and strap mixtures in any other case.

There’s additionally Gun Gray, Khaki and Military Inexperienced – should you fancy a flat color – or there’s Camo Inexperienced, which as its identify suggests, incorporates a gentle inexperienced gray/brown camouflage print in opposition to a white base.


The convex bezel helps shield the watch’s 1.3in round display from glancing blows, do you have to catch it, whereas the show itself is roofed by Gorilla Glass 3; which after long-term put on solely exhibits indicators of micro-abrasions, which means it is nonetheless wholly seen and useable months after being unboxed.

Colors, distinction, decision and, most significantly, brightness are properly suited to strongly-sunlit days and it solely takes a swipe and a faucet to regulate brightness or toggle the watch’s auto-brightness function on or off.

There’s additionally a flashlight function, which maximises the show’s brightness whereas exhibiting a totally white display – a software that noticed extra use than anticipated in real-world testing.

Using AMOLED expertise additionally lends itself properly to providing always-on performance. Whereas the T-Rex’s default tilt-to-wake system appeared completely responsive (and might be made extra delicate, if desired), for individuals who by no means need to look ahead to the show to fireside up and are pleased with the added battery drain, the watch can completely present the time, battery stage and your step rely.

It is only a disgrace that contemplating there are about 30 totally different watch faces to select from, the always-on watch face is all the time the identical, no matter what you select.

Software program & options

Huami’s proprietary consumer expertise is easy however efficient, sharing some similarities with the likes of Put on OS on the subject of its touchscreen-based directional consumer navigation.

By default, you are met together with your chosen watch face, which you’ll be able to change with a long-press or by way of the watch’s companion Android or iOS app. Swiping up or down takes you thru a carousel of options together with fast settings (the place you may allow the flashlight, energy saving mode, Do Not Disturb, management brightness and lock-off contact enter), steps and energy – relative to your day by day objective and coronary heart price.

Left enables you to view and dismiss notifications mirrored out of your telephone (there’s little else in the best way of interplay right here), whereas on the suitable is the watch’s predominant perform menu; the place every part from the T-Rex’s exercises to climate, Discover My Telephone and Settings all stay.

Confusingly, urgent the top-right {hardware} button (labelled Choose) from the primary watch face additionally brings in a menu from the suitable, however a unique one – appearing as a shortcut to the watch’s 14 exercise modes.

We have already lined a number of of the T-Rex’s supported exercise modes, like climbing and elliptical routines, and though the general pool of 14 modes appears comparatively small, it covers frequent out of doors pursuits (strolling, operating, biking) in addition to extra unorthodox ones; similar to snowboarding, triathlons, plus separate pool and open-water swim monitoring (it is swim-proof as much as 5ATM).

One other quirk of the T-Rex’s consumer expertise is that some elements, like function order or the flexibility to schedule when tilt-to-wake is lively, are solely accessible from the companion app – which means it is worthwhile exploring each the watch and app interfaces to be sure to’re capable of get essentially the most out of what the T-Rex has to supply.

Monitoring & efficiency

In addition to its sturdy building and help for the various exercise modes talked about earlier, the T-Rex additionally performs host to built-in GPS (which means phone-free route monitoring) and the corporate’s personal ‘BioTracker’ PPG optical coronary heart price sensor (which helps fixed coronary heart price monitoring).

As for monitoring knowledge – greatest accessed by way of the companion app – the T-Rex retains tabs on steps, kcal, coronary heart price and sleep by default. It additionally incorporates a metric referred to as PAI, which scales relying in your different health metrics, designed to function a normal health rating over the course of a seven-day interval.

You’ll be able to drill down on elements like sleep to see data similar to sleep length, sleep state and obtain a sleep rating; in addition to some normal recommendation. It isn’t notably in-depth, nor does it seem like dynamic, ought to your habits change, however it’s nonetheless an appreciated inclusion, regardless of its simplicity.

Coronary heart price and distance measurement proved reliably constant over a number of classes (examined by operating the identical routes over numerous weeks), in addition to in opposition to pricier wearables, just like the Huawei Watch GT 2e and Apple Watch. It did, nevertheless, typically take a second to regulate to sudden shifts in tempo and coronary heart price.

As for consumer interplay – navigating across the T-Rex’s UI is a bit of inconsistent, with dropped frames or stutter and lag-prone contact enter from time-to-time, whereas fluidity was extra forthcoming at others. Know that you simply’re not going to get Apple Watch or Samsung Galaxy Watch 3-levels of UI smoothness right here.

Battery life

The T-Rex’s 390mAh battery is quoted at providing as much as 20 days of use based mostly on always-on coronary heart price and sleep monitoring, lively GPS for 13 minutes a day, receiving 150 day by day notifications that activate the display day by day, 30 wrist-raised display activations a day and 5 minutes of ‘different’ utilization per day.

Actual-world longevity understandably will depend on how closely you lean on the T-Rex’s activity-tracking capabilities – particularly when utilizing options like GPS.

As a watch at the start – pushing notifications, utilizing the flashlight and checking the time – it often lasted round 5 to 6 weeks on a cost, whereas common exercises (operating for 30 minutes, 3 times every week with GPS enabled), drained the T-Rex in (at their quickest) three weeks. Mountain climbing for an hour with GPS on saps round 4% to five% cost.

In terms of recharging the T-Rex, there are two POGO pins on both facet of that BioTracker coronary heart price sensor on its again. These hooked up to a proprietary USB adapter utilizing robust magnets and is straightforward to align and connect with out challenge. It would not sit properly on a flat floor whereas charging, making it a poor nightstand clock when not being worn.

The T-Rex reaches 41% cost after 30 minutes cost time, 87% after an hour and reaches full cost in just below 90 minutes. Whereas these speeds aren’t blistering, contemplating how occasionally the T-Rex requires charging, it is a minor inconvenience at greatest.

Worth & availability

The Amazfit T-Rex is on the market for £129/€139.99/US$139.99 (though discounted to $119.99 on the time of publication) – on provide from an assortment of shops, together with Amazon UK, US and Europe, in addition to the likes of Greatest Purchase, Stateside.

It butts up in opposition to competitively-priced fitness-centric smartwatches, just like the £159.99/€199 Huawei Watch GT 2e and common band-style trackers, just like the £129.99/€149.95/US$149.95 Fitbit Cost 4.


The Amazfit T-Rex hits the nail on the pinnacle on the subject of its intentions as a rugged fitness-centric smartwatch that is constructed to resist difficult out of doors situations while additionally not breaking the financial institution.

It balances smartwatch fundamentals with a bevvy of fitness-tracking options. You’ll be able to’t drill notably deep with the metrics that the T-Rex offers, there is no compatibility with third-party apps, do you have to need to share your health knowledge round and consumer interplay could possibly be smoother however for the value, there’s are acceptable omissions – as long as you are conscious of them beforehand.

For those who’re into its rugged aesthetics and humble feature-set as a competitively-priced fitness-tracking smartwatch, the Amazfit T-Rex is actually value consideration.

Learn subsequent: Greatest health trackers 2020

Amazfit T-Rex: Specs

Round 1.3in 360×360 AMOLED show


14 exercise modes

Corning Gorilla Glass 3

PPG optical coronary heart price sensor


5ATM swim proof

Bluetooth 5.0/LE

390mAh battery

Quoted 20-day battery life

Magnetic 2-pin pogo pin charger

58 grams w/ strap

Help for Android 5.0/iOS 10.Zero and up

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