I'll start this review off by simply saying this: the Asus ROG NUC absolutely belongs on our list of the best mini PCs, and perhaps indeed the best computers overall - expect to see it make an appearance on those pages in the near future.
Asus has been hard at work on the NUC series, which was originally conceived by Intel as a new breed of compact desktop PCs before being sold off to Asus in 2023; amidst Intel's multitude of troubles at the time, it was deemed a necessary move to streamline the company and focus on chipmaking rather than PC production. The NUCs were historically pretty good devices, but it's clear that Asus has taken them to an entirely new level.
The new-for-2025 ROG NUC is a wonder; an ultra-compact desktop system packed with some of the most powerful cutting-edge gaming components, including a 2nd-gen Intel Core Ultra processor and an Nvidia GeForce RTX 5000 GPU (the one in my review unit is an RTX 5080), plus 32GB of RAM and a 2TB SSD.
(Image credit: Future)The whole system is essentially constructed around that graphics card, which is technically a laptop GPU - one can only assume that a full-scale desktop 5080 would be too chunky, even though Nvidia worked hard to scale down the comically gigantic cards of the RTX 3000 and 4000 eras. As you might expect, performance is excellent; expect high framerates and smooth gameplay at 1440p and even 4K, though the sorry state of modern PC game optimization means you'll probably need to turn on DLSS in some titles at 4K.
Those powerful components mean the ROG NUC is also a competent workstation system, which could prove to be a boon for professional creatives who need a powerful PC but have limited desk real estate to work with (and don't want to jump ship to macOS with the admittedly excellent M4 Mac mini).
(Image credit: Future)Of course, a spec sheet like that does mean that the Asus ROG NUC is far from cheap. I'll get into the details in the pricing section below, but my review unit will set you back $3,199 / £2,599 (around AU$4,925) - no small sum for anybody, and a lot more than Apple's signature mini computer will cost you. Of course, any pre-built RTX 5080 desktop from a reputable manufacturer is going to cost you at least somewhere in the range of $2,800 / £2,000 / AU$5,000, so it's not an entirely ludicrous proposition even if it does place the ROG NUC beyond the budgets of many PC gamers.
Despite this, I loved using the new Asus ROG NUC, and having tested NUC devices in the past, I can comfortably say that it's one of the best iterations on the formula yet. If you've got the money to spend and want something that delivers a lot of power in a small package, this device is the way to go.
Asus ROG NUC (2025) review: Price & AvailabilityStarting at $2,599 / £2,129 (about AU$4,000) for the base configuration, which sports an RTX 5070 Ti rather than the 5080 in my review unit, along with less storage and RAM as you can see in the spec table below, the new ROG NUC isn't exactly what I'd call affordable. Meanwhile, the 5080 model featured in this review - which is externally identical - will run you a hefty $3,199 / £2,599 (around $4,925).
Still, it's not absurdly priced for what it offers; considering the sheer lack of powerful compact PCs on the market, the best option for many potential users will be to build your own ITX system, and having spent plenty of time mucking about with compact PC cases in my years as a computer hardware journalist, I can say with certainty that it'll be a lot harder than simply buying a ROG NUC. Oh, and it most likely won't be as small, and will potentially end up being more expensive too!
(Image credit: Future)So while the NUC is undeniably a pretty expensive piece of kit, I can't mark it down too much for that; if a powerful but ultra-compact PC for serious gaming or content creation work is what you want, this might be the single best option out there right now. Of course, a PS5 Pro will cost you a lot less... but it also doesn't fill the role of a fully capable desktop PC.
The Asus ROG NUC (2025) is already available to purchase direct from Asus and partner retailers in the US and UK, but it seems our Aussie friends will have to wait a little longer - though Asus did confirm that the new model will indeed be coming to Australia. Regional pricing for Australia is currently unconfirmed (the figures listed above are only conversions).
Asus ROG NUC (2025) Base Config
Asus ROG NUC (2025) Review Config
Price
$2,599 / £2,129 (about AU$4,000)
$3,199 / £2,599 (around AU$4,925)
CPU
Intel Core i5-13420H (8 cores, 2.10GHz)
Intel Core Ultra 9 275HX (2.70GHz)
GPU
Nvidia GeForce RTX 5070 Ti 16GB Laptop GPU
Nvidia GeForce RTX 5080 16GB Laptop GPU
RAM
16GB DDR5
32GB DDR5
Storage
1TB PCIe NVMe 4.0 M.2 SSD
2TB PCIe NVMe 4.0 M.2 SSD
Ports and Connectivity
6x USB-A 3.2 Gen 1, 2x USB-C 3.2 Gen 2 (Thunderbolt 4), 2x HDMI 2.1, 2x DisplayPort 2.1, 1x RJ-45, 1x 3.5mm combi audio jack, Kensington Lock
6x USB-A 3.2 Gen 1, 2x USB-C 3.2 Gen 2 (Thunderbolt 4), 2x HDMI 2.1, 2x DisplayPort 2.1, 1x RJ-45, 1x 3.5mm combi audio jack, Kensington Lock
Dimensions
11.1 x 7.4 x 2.2in / 28.2cm x 18.8cm x 5.7cm
11.1 x 7.4 x 2.2in / 28.2cm x 18.8cm x 5.7cm
Weight
6.79lbs / 3.12kg
6.79lbs / 3.12kg
Asus ROG NUC (2025) review: DesignMaking a compact PC chassis can take designers in a lot of different directions. Do you aim for a low, flat design like Apple's Mac mini, or build upwards with a small footprint like the fantastic Corsair One i500?
As you can no doubt tell from the pictures, Asus has gone for the latter approach, with a thin tower design that produces a footprint of less than eight-by-six inches (full dimensions in the spec sheet above). It can technically also be laid on its side with the stand removed - ideal for putting it in a TV stand as a console-style living room PC - but after disassembling it, I can say that I wouldn't particularly recommend that unless you're willing to prop it up on something to ensure that the exhaust fans have enough breathing room to vent properly.
Speaking of disassembly: I don't always dig around in the guts of pre-built systems, but this was one case where I felt obliged to. See, the NUC series (standing for 'Next Unit of Computing') was originally founded by Intel in 2013 with the goal of creating a small-form-factor barebones PC with customization and upgrade potential.
Asus has clearly moved away from this ethos somewhat, as the ROG NUC is not only a fully-fledged system, but also has relatively little upgradability.
(Image credit: Future)Upgrade options here are effectively limited to the RAM and SSD, and you'll need to discard the old RAM if you want more, since there are only two DIMM slots and they're both already occupied. There is, however, a spare M.2 slot for fitting a second SSD, should you want to expand your storage.
Really, this level of upgradability might be a slight step down from the more classic barebones NUCs Intel used to make, but it's pretty par for the course as far as modern mini PCs go.
The case is also easy enough to open up for any upgrade work, which is nice to see; I've dealt with mini PC cases that seemed determined not to let me get at the goodies inside.
Thermal management is handled by multiple fans, with vents on both flat sides and the top. It's quite effective at keeping the whole unit cool (even at the peak of my benchmarking process, the ROG NUC didn't get particularly warm to the touch), although I would note that the fans can get rather loud when running resource-intensive games; if you're planning to play in 4K, I'd recommend a headset or one of the best computer speakers.
Overall, I like the design; it's a bit less visually busy than last year's model, while still managing to fit in a good range of physical ports for connecting your devices. In addition to two HDMI and DisplayPort video outputs for connecting multiple monitors, you also get two Thunderbolt USB-C ports, six USB-A ports, an RJ-45 Ethernet slot, and the good ol' 3.5mm headphone jack. As mini PCs go, this NUC has it all.
Here's how the Asus ROG NUC (2025) performed in our suite of benchmark tests:
Geekbench 6 (Multi Core): 19,683; (Single Core): 2,977
Geekbench AI (Single Precision): 28,951; (Half Precision): 50,926; (Quantized): 22,406
Cinebench R23 (Multi Core): 34,413; (Single Core): 2,188
Cinebench R24 (Multi Core): 2,011; (Single Core): 132
Crossmark Overall: 2,338
3DMark Fire Strike: 39,680; Steel Nomad: 5,309; Solar Bay: 106,741; Speed Way: 5,809; Port Royal: 14,233
BlackMagicDisk Read: 4,333MB/s; Write: 4,928MB/s
25GB Copy Test: 1,493MB/s
Shadow of the Tomb Raider (1080p, Medium): 225 FPS; (1080p, Highest): 219 FPS; (Balanced Upscaling, 1080p, Highest): 224 FPS
Total War: Warhammer III (1080p, Medium): 319 FPS; (1080p, Ultra): 176 FPS
Cyberpunk 2077 (1080p, Medium): 178 FPS; (1080p, Ultra): 148 FPS; (Balanced Upscaling, 1080p, Ultra): 157 FPS
Metro: Exodus (1080p, Medium): 239 FPS; (1080p, Extreme, No RT): 102 FPS; (Balanced Upscaling, 1080p, Extreme RT): 137 FPS
As you'd hope from a system with an Nvidia RTX 5080 - even the trimmed-down laptop version inside the ROG NUC - the gaming performance on offer here is undeniably strong.
Our standard benchmarking process uses games tested at 1080p (primarily without any upscaling tools, like Nvidia's DLSS) to provide a realistic comparison point between systems. Needless to say, the ROG NUC absolutely blasted through these, offering stellar performance with triple-digit framerates in literally every test I ran.
Bump things up to 1440p and you'll get similarly great performance, especially if you do turn on DLSS (no need for frame-generation here, honestly). At 4K, I found most games could still clear that prized 60fps mark, with only Cyberpunk 2077 and Metro Exodus requiring DLSS to maintain a stable framerate when turning on maximum ray-traced graphics. It's worth bearing in mind that upscaling has more of an impact at higher resolutions; at 1080p, DLSS in Balanced mode only gained me an extra nine frames per second in Cyberpunk at the Ultra graphical preset, while at 4K that differential increased to a whopping 38.
I'd also like to address some of the concerns many gamers clearly have about DLSS (yes, I spend too much time on Reddit, I see those posts too). It literally works great. That's all I have to say; the tech is four generations in at this point, and it's been refined enough that I noticed no discernible difference in gameplay at 4K.
Frame-generation is a different story, of course - 4x Multi Frame Generation from Nvidia is frankly still wonky even if it does boost your FPS - but at this stage, we should all be using upscaling for playing games at any resolution above 1080p.
(Image credit: Future)Outside of raw gaming performance, the ROG NUC performed admirably in synthetic tests across graphical, AI, and creative workloads.
The 3DMark graphic benchmark suite brought back results that were broadly what I anticipated: strong, but not quite on par with the 'true' desktop RTX 5080, so don't buy this if you're expecting a fully-fledged 5080 desktop experience squeezed into a compact chassis. At a fundamental level, this is more like a 5080 laptop in a desktop form factor.
Still, the results were good; the Intel Core Ultra 9 CPU also delivered solid numbers, with great performance in the Geekbench and Crossmark benchmarks, placing it comfortably on par with laptops equipped with the same processor. AI performance was also good, since the presence of a discrete GPU easily outweighs anything the Intel chip's built-in NPU brings to the table.
Lastly, the SSD that comes with the ROG NUC is fast. With read and write speeds in excess of 4GB/s, the only thing that'll constrain you in terms of file transfers is your internet connection. Games load up fast, and Windows 11 boots up faster.
Attributes
Notes
Rating
Value
Although it's far from cheap, the pricing doesn't place it ludicrously higher than similarly-specced systems, and the compact chassis is quite unique.
4 / 5
Design
A fantastically compact design that somehow manages to cram in a ton of physical ports, the ROG NUC is one of the best-crafted mini PCs I've ever seen.
5 / 5
Performance
Great gaming performance at any resolution, along with strong performance in creative and AI workloads - just bear in mind that this isn't a full-fat desktop GPU.
4.5 / 5
Total
The ROG NUC is, simply put, one of the best compact gaming PCs I've ever seen. I do wish it wasn't quite so expensive, but Asus has really made something special here.
4.5 / 5
Buy the Asus ROG NUC (2025) if...You want something powerful but compact
On a fundamental level, there are very few systems out there that can match the gaming capabilities of the ROG NUC while still offering such a tiny form factor.
You want to connect lots of peripherals
If you're a power-user (or just a bit gadget-crazed), the ROG NUC has enough ports to support a whole bunch of monitors, mice, keyboards, webcams, speakers, stream decks... you get the idea.
You're on a tight budget
Yeah, this thing is pretty dang expensive. If you just want an RTX 5080 system and don't care about size, you'll be able to spend less for the same (or even better) performance.
You want a silent system
Although the ROG NUC's cooling is surprisingly effective at keeping the system at a suitable temperature, those fans can get pretty noisy when running demanding software like games.
NZXT Player PC
One of the best desktop PCs we've reviewed this year, the 'Player PC' from NZXT might have an awful name, but it delivers strong gaming performance in a well-constructed case - plus, as a 5070 system, it'll cost you a bit less than the NUC too.
Read our full NZXT Player PC review
Mac mini (M4, 2024)
If you’re looking for more of a creative workstation than specifically a gaming PC, but were drawn to the ROG NUC's powerful specs and compact design, then the M4 Mac mini is the device for you. We called it 'the best Mac ever' in our review, and it lives up to that epithet with stellar productivity and creativity performance in a truly tiny chassis.
Read our full Mac mini (M4, 2024) review
How I tested the Asus ROG NUC (2025)I tested the Asus ROG NUC for a week, including the weekend, during which time it took the place of my usual home office desktop system - a far chunkier PC. I used it daily for work and assorted other online activities; I'm currently rewatching The X Files, and I also used it to host a virtual TTRPG session.
I also spent plenty of time in my off hours using the ROG NUC for gaming, which is a regular hobby of mine. I mostly tested triple-A titles (in addition to our regular suite of game benchmarks), including Avowed and Remnant II, plus a cheeky bit of Stardew Valley, which was unsurprisingly not very taxing on the system.
I've been reviewing PC hardware for more than seven years and have been a PC gamer for more than twice that time, with so many laptop and desktop reviews under my belt at various publications that I sincerely can't even count them. This was my first time reviewing a NUC unit since Intel sold the brand off to Asus, and needless to say, I'm very pleased with the work Asus has done.
The Garmin Venu 4 is a gem, and one that should satisfy moderate-to-serious exercise enthusiasts that want a great smartwatch with a generously sized battery and heavy focus on fitness. While it isn’t as rugged as the Forerunner, Instinct or Fenix range, this is a watch better-suited to people who want an unobtrusive, premium-looking watch for the office and a powerhouse for runs and rides, something between a Samsung Galaxy Watch and a regular Garmin.
The Venu 4 delivers on this promise, packing a suite of features from the best Garmin watches into its sleek-looking stainless steel body and bright screen. It’s missing a few features that you might expect to find on an Apple or Samsung smartwatch, such as LTE connectivity and full-color maps – and at this price tag, you might miss at least one of them.
The operating system, as slick as it is, also has a few cumbersome quirks: I’m so used to Google and Apple’s raise-to-speak voice assistants that to use the upper button and touchscreen to get to Garmin’s voice assistant functionality, which I use to set kitchen timers and the like, seems almost archaic and counter-intuitive.
However, these are small niggles: generally speaking, the watch performs admirably. While the lack of full-color directional maps is disappointing, the interface works just fine when following courses during runs, and the voice assistant is as responsive as Siri, if not as sophisticated as on-device AI such as Gemini. The battery, said to be up to 12 days of use in smartwatch mode, is an accurate measurement: I wore the watch for around 10 days before needing to charge it, with quite a bit of working out. The heart rate readings from Garmin’s Elevate V5 sensor are accurate enough for all but elite athletes, but I’ll touch on that more in the Performance section of the review.
New health tools such as Lifestyle Logging and Health Status are useful, especially the self-reporting Lifestyle Logging structure, which allows you to assign tags to your day (caffeine, alcohol, healthy meals, heavy meals and so on) to show the effects of different stimuli on your metrics.
Garmin’s usual suite of outstanding metrics are present and correct: as a regular runner, I find stride length, cadence and so on useful for tweaking my technique, and Garmin’s Race Calendar and Primary Race widgets are second to none. It’s a worthy buy for anyone who wants a Garmin, but doesn’t like the outdoorsy look so many of them share.
Garmin Venu 4: Price and availability(Image credit: Future)The Garmin Venu 4 costs $549.99 / £469.99 / AU$949, and this is true for both the 41mm and 45mm sizes. You get the choice of Silver, Slate and Lunar Gold colors – I have the Slate option, and it looks great – and you can pay an additional $50 / £50 /AU$69 for other bands. I’m seriously considering splashing out on a brown leather band, which would really set off the look of the Slate.
Value-wise, this is around the price of a more expensive Apple or Samsung Galaxy Watch8 Classic, and I’d say that’s about right for where this sits in the market; what it lacks in smart communication credentials, it makes up for in battery life and fitness features. There’s no getting around this is a price rise over the older Venu 3, but the premium metal body and additional features make it worth the tradeoff.
Value score: 4/5
Garmin Venu 4: SpecificationsComponent
Garmin Venu 4 (41mm)
Garmin Venu 4 (45mm)
Price
$549.99 / £469.99 / AU$949
$549.99 / £469.99 / AU$949
Dimensions
41 x 41 x 12 mm
45 x 45 x 12 mm
Weight
46g with band
56g with band
Case/bezel
Stainless steel/Polymer
Stainless steel/Polymer
Display
390 x 390px 1.2-in AMOLED display
454 x 454px 1.4-in AMOLED display
GPS
GPS, Galileo, GLONASS, Beidou, QZSS, SatIQ
GPS, Galileo, GLONASS, Beidou, QZSS, SatIQ
Battery life
Up to 10 days
Up to 12 days
Connection
Bluetooth, Wi-Fi
Bluetooth, Wi-Fi
Water resistant
Yes, 5ATM
Yes, 5ATM
Garmin Venu 4: Design(Image credit: Future)If you’ve got this far in our review, you’ll know I like the look of the Garmin Venu 4. Whereas the stainless steel element of the 3 was confined to the bezel, with the case itself made of plastic, Garmin has expanded its use of steel to include the case as well, and it looks all the better for it. The dark metal of my Slate model is understated and classy, and I can’t wait to pair it with a leather strap. The screen is bright, but the bezels could be slightly thinner for my taste. Still, it’s hard to complain about the looks of this watch.
As opposed to its more outdoor-oriented watches such as the Fenix, Forerunner and Instinct series, the Garmin Venu 4 has two buttons instead of five. Its snappy and responsive touchscreen does most of the heavy-lifting when it comes to navigating, although you can configure the buttons to operate on long and short presses. A long press on my “back” button ignites the LED torch (a great addition on all the best Garmin watches now), while a long press on my upper “start” button summons the Controls tab, through which I can activate the Voice Assistant, Find my Phone, DND and other functionalities quickly. It’s a nice system.
The redesigned UI isn’t quite as smooth and seamless as watchOS or Wear OS, but it isn’t far off. Garmin used to look downright basic in comparison (which I think had a charm all by itself to be honest, and part of me misses it), but it looks great and works well in practice when you’re swiping through widgets or teeing up a workout. Garmin users who choose to upgrade will find the new setup intuitive to use, as will first-timers.
Design score: 5/5
Garmin Venu 4: Features(Image credit: Future)Tons of great features abound here. The new Health Status feature looks at five key metrics during sleep: heart rate, HRV, respiration, pulse ox and skin temperature. It details whether all of your metrics are in their normal range, and if one or more is out of whack, something is afoot.
Often, this can be combined with the Lifestyle Logging feature to self-diagnose potential issues. Lifestyle Logging allows you to tag your day with the amount of caffeinated drinks, meditation, alcohol, healthy meals, heavy meals, cold showers, or other custom tags you might care to add. If your skin temperature is outside your healthy range and you logged some alcoholic drinks at a party the day before, or your HRV is off after a day of too much caffeine, you’ll know what to change to bring yourself back in line. Still, it will be a cold day in hell before Garmin makes me give up my morning coffee.
The usual suite of wellness and fitness features are present, with the Venu 4 – like the rest of the best Garmin watches – excelling at running and cycling, in particular. Training plans from Garmin Coach, local courses generated in the Garmin Connect app and upcoming races can be loaded onto your watch to turn it into a training powerhouse. Advanced metrics such as power for cyclists, and ground contact time or vertical oscillation for runners really empower the watch to be particularly helpful for connoisseurs. I also use it to time my rest periods in the gym between sets – a useful feature in the Strength workout profile to keep my mind on my workout. I’m missing full-color maps here, but the basic follow-along directional arrow for longer courses will be good enough for most.
Smarts-wise, the Controls tab features the Find my Phone and Voice Assistant functionalities, which are serviceable and useful but pretty basic. There are no on-device AI smarts here, but I can set a timer easily enough. The LED torch is eminently useful in three tiers of powerful white light and a less aggressive red option for night runs. A speaker and microphone allow you to take calls on-wrist, which is useful in a pinch. However, without the option to connect the watch to your network without a phone via LTE, it’s a convenience rather than a necessity.
Features score: 4.5/5
Garmin Venu 4: Performance(Image credit: Future)I compared the Garmin Venu 4’s Elevate V5 heart rate sensor to a chest strap – the Polar H10, described as the most accurate heart rate monitor available to most people, and used by professional and amateur athletes alike – during a couple of workouts.
During my tests, after a brief bit of initial variation, the Garmin Venu 4 tightened up and matched the Polar H10’s readings very closely. After a 30-minute run, the Polar H10’s average beats-per-minute for my heart rate registered as 156bpm. The Garmin Venu 4 registered 151bpm.
For training purposes, that’s certainly close enough for most – it isn’t really a serious statistical outlier – although I suppose it could be closer. The Apple Watch Ultra 3, which I also wore during this run, registered 155bpm. Still, 5bpm out across the entirety of the workout isn’t anything to worry about, and a good enough estimation to indicate the Elevate V5’s accuracy.
Battery life performs as described, too: the watch lasted a full 10 days with multiple workouts before needing a top-up. The Venu 4 was comfortable to use and better to sleep in than a lumpy Fenix – I hardly took it off all week.
Performance score: 4.5/5
Garmin Venu 4: ScorecardAttribute
Comments
Score
Value
About right for its place in the lineup, but not a huge bargain
4
Design
Looks great and is intuitive to use. Top marks
5
Features
I would have loved LTE and full-color maps, but they’re my only quibbles
4.5
Performance
Accurate, long-lasting and looks great on wrist in the office. Enough smarts for most.
4.5
Garmin Venu 4: Should I buy?Buy it if...You’re looking for an all-rounder
This smartwatch can be worn looking smart to social occasions, dressed up with a change of strap, and out on the trail.View Deal
You want battery life
Forty-two hours for the Apple Watch Ultra 3? Try 10 days with the Venu 4. View Deal
You’re a keen outdoor exerciser
While this will work fine for the gym, it’s a bit of a waste for gym-bunnies: it really shines on runs, hikes and rides. View Deal
Don't buy it if...You’re a rugged adventurer
Those who spend their lives in the wild might prefer an Instinct or Fenix instead. View Deal
You want the smartest watch
If you’re looking for LTE connectivity, an AI voice assistant and seamless phone connectivity, you might be better off with a Wear OS or Apple Watch. View Deal
Also considerComponent
Garmin Venu 4 (41mm)
Apple Watch Series 11 (42mm)
Samsung Galaxy Watch8 (40mm)
Price
$549.99 / £469.99 / AU$949
From $399 / £369 / AU$679
From $349.99 / £319 / AU$649
Dimensions
41 x 41 x 12 mm
42mm x 36mm x 9.7mm
42.7 x 40.4 x 8.6mm
Weight
46g with band
30.3g (42mm)
30g
Case/bezel
Stainless steel/Polymer
Aluminum with a metal back or Titanium (100% recycled)
Armor Aluminum
Display
390 x 390px 1.2-in AMOLED display
Always-on Retina LTPO3 display Wide-angle OLED at 374 by 446 (42mm)
1.3-in super AMOLED
GPS
GPS, Galileo, GLONASS, Beidou, QZSS, SatIQ
L1 GPS, GNSS, Galileo, and BeiDou
GPS, Glonass, Beidou, Galileo
Battery life
Up to 10 days
24 hours, 38 hours in Low Power Mode
Up to 30 hours
Connection
Bluetooth, Wi-Fi
Bluetooth 5.3, Wi-Fi, second-generation ultra-wideband chip, and 5G (Optional)
Wi-Fi, NFC, Bluetooth 5.3
Water resistant
Yes, 5ATM
WR50 and IP7X
Yes, 5ATM
Apple Watch Series 11
The best all-around smartwatch for iPhone users, and a solid Venu 4 alternative.
Read our full Apple Watch Series 11 review
Samsung Galaxy Watch8
A terrific smartwatch and the best for Samsung users. Great run tracking, although again, battery life suffers compared to the Venu 4.
Read our full Samsung Galaxy Watch8 review
How I testedI wore the Garmin Venu 4 for two weeks, drained the battery down while completing gym, running and hiking workouts. I used features such as Lifestyle Logging, tested the Voice Assistant, ECG functionality, ran at night with the torch enabled, and conducted an accuracy test against the Polar H10 heart rate monitor and Apple Watch Ultra 3.