Box Squat: How to Do It, Box Height and Benefits
How to box squat with a barbell in a rack: choosing box height, sitting back versus touch-and-go, muscles worked, benefits, common mistakes and sets and reps.
By Paul Kendrick, Cardio & Endurance Editor · Updated 13 September 2026
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Amazfit built the Cheetah 2 Pro to be taken seriously by runners, and on the hardware it succeeds. Grade 5 titanium frame, sapphire glass over a 3000 nit AMOLED, 45.6g on the scales without a strap, 31 hours of dual band GPS and a full set of offline maps with no subscription attached. Everything a £700 Garmin does, at £449.90.
The problem is that £449.90 is not the bargain it looks like on paper. It is squarely inside Garmin's strongest territory, where a Forerunner 970 lives and a discounted Fenix is not far off, and those watches carry software Amazfit still can't match. Worse for Amazfit, the company's own T-Rex 3 Pro sells for £331 with a larger battery, a longer GPS runtime and a 10 ATM rating. The Cheetah 2 Pro has to justify £120 on weight and running features alone, and that's a harder argument than it should be.
How we review
Specifications here come from Amazfit's UK Cheetah 2 Pro product page and are labelled as the company's own claims. The rest draws on the repeated themes in verified owner reviews and on published research into wrist based heart rate accuracy. We have not run a full training block on this exact unit, so nothing below is presented as our own measurement.
Runners who care about weight, and who train by structure rather than by feel. If you're building toward a marathon on a plan with threshold sessions, tempo blocks and long runs, the Cheetah 2 Pro gives you the metrics to execute them: lactate threshold estimation, running power, gait analysis and the guided workouts to hang it all on. Under 46 grams it disappears on your wrist in a way a chunky adventure watch never does.
It's the wrong buy for anyone who mostly swims, lifts or cycles. The 5 ATM rating is fine for a pool and useless for anything deeper, and the strength training side, while it does recognise 25 exercises automatically, isn't why you'd spend this much.
Check Amazfit Cheetah 2 Pro price on AmazonThree of the analysis features are worth the attention. Lactate threshold estimation gives you a pace and heart rate to anchor tempo work around, and it updates as your fitness moves, which beats the fixed zones most people train with for years after they've outgrown them. Gait analysis reports cadence, ground contact time and stride length; cadence is the one to act on, the others are interesting rather than actionable for most runners.
Running power is the one people argue about. The watch estimates mechanical work in watts from its motion sensors, and because it responds to a hill or a headwind immediately rather than lagging 30 seconds behind like heart rate, it's a better pacing signal on undulating ground. The number itself isn't transferable. Amazfit's watts and Garmin's watts and a Stryd pod's watts are three different scales, so learn yours and ignore everyone else's.
| Display | 1.32in AMOLED, 466 x 466, up to 3000 nits |
|---|---|
| Glass | Sapphire |
| Case | Grade 5 titanium frame, aluminium buttons, plastic bezel |
| Weight | 45.6 g without strap |
| Dimensions | 48 x 48 mm |
| Battery | 540 mAh, up to 20 days typical use |
| GPS battery | 31 h accurate, 69 h power saving, 99 h extended |
| Positioning | Dual band, 6 satellite systems |
| Water resistance | 5 ATM |
| Storage | 32 GB |
| Sport modes | 170+, with 25 strength exercises auto recognised |
| Sensors | BioTracker 6.0 PPG, barometric altimeter, gyroscope, temperature |
| Connectivity | Bluetooth 5.3, Wi-Fi 2.4GHz, NFC for Zepp Pay |
BioTracker 6.0 is a competent optical sensor and it has the same ceiling every optical sensor has. A systematic review of wrist worn activity trackers and their measurement accuracy found that modern devices track steady exercise well, while a validation study across ten commercial wearables in different conditions and activities found accuracy falling away during high intensity and intermittent work, where wrist movement corrupts the optical signal.
So: fine for easy runs, long runs, sleep and resting heart rate trends. Pair a chest strap for track sessions and hill repeats, because that's exactly where the readings wander and exactly where the data matters. Our best heart rate monitor UK guide covers straps from around £40 upward.
The titanium frame is the headline and it's real. At 45.6g this is one of the lightest 48mm metal watches you can buy, and Amazfit got there by machining away material rather than by going thin and flexy. The sapphire glass survives bag straps and door frames in a way tempered glass doesn't.
Then there's the plastic bezel, which sits oddly on a watch whose entire pitch is premium materials. It saves a few grams and it will scuff. The 1.32in screen is another slight disappointment at this money, a size you'd expect at £300, not £450, though the 3000 nit brightness does most of the work on legibility.
At £449.90 the Cheetah 2 Pro has to beat the Forerunner 970 on something that matters to you. It wins on weight and it wins on price-per-specification. It loses on the software: Garmin Connect's training load modelling, race predictions, third party integrations and map detail are all ahead, and for a runner who plans in TrainingPeaks or lives on Strava segments that gap is the whole decision.
The harder comparison is inside Amazfit's own range. The T-Rex 3 Pro is £120 cheaper, runs 38 hours of accurate GPS against 31, takes a 10 ATM rating and a dive certification, and shares the same sensor and the same app. Unless the 7 grams and the running specific analysis genuinely change how you train, the cheaper watch is the better buy. If you want to see how the rest of the market compares before committing, our best Garmin watch UK guide and the COROS PACE Pro review cover the two obvious alternatives.
See current Amazfit Cheetah 2 Pro priceIt is a very good watch at an awkward price. The titanium case, sapphire glass, 31 hour GPS battery and free offline maps are all excellent, but £449.90 buys you a Garmin Forerunner 970 or most of a Fenix on offer, and those come with deeper training software. Buy the Cheetah 2 Pro if the 45.6g weight and the running specific metrics matter more to you than Garmin Connect's ecosystem.
Very good. It uses dual band reception from six satellite constellations, which is the technology that stops your track wandering through buildings and under tree cover. Accurate GPS mode runs for 31 hours, power saving for 69, and an extended mode stretches to 99 hours for people doing multi day events.
It is an estimate of the mechanical work you are doing, in watts, calculated from the watch's motion sensors rather than measured directly. It responds faster than heart rate on hills and into wind, which makes it useful for pacing, but the absolute number is not comparable between brands. Treat it as a scale you learn on this watch, not a universal unit.
Pool and open water swimming are both supported, and the watch is rated to 5 ATM. That is fine for swimming and showering. It is not a diving watch, and Amazfit's own T-Rex 3 Pro is the model to buy if you want a 10 ATM rating and a dive certification.
45.6g without the strap, which is light for a 48mm case with a metal body. Amazfit got there by using grade 5 titanium for the frame and removing material where it does not affect rigidity. On long runs the difference against a heavier steel watch is noticeable by hour three.
It has 32GB of storage and plays music through Bluetooth headphones, but there is no Spotify or Deezer offline sync. You copy MP3 files across from a computer, which works and feels like 2012. If phone free running with streaming playlists is the point, this is the wrong watch.
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