ฝัง
- เผยแพร่เมื่อ 11 ส.ค. 2023
- Today, we're delving into the world of #noninvasive glucose monitoring as we explore a high-tech smartwatch that's making bold claims. Brace yourselves, because this one comes with a hefty price tag of $150.00!
In a world saturated with fitness trackers and heart rate monitors, this smartwatch aims to stand out. It's not just about exercise modes and heart rate; it boasts Bluetooth connectivity for over 50 professional exercise modes, real-time heart rate tracking, and AI-powered algorithms to capture your every move. But let's get to the heart of the matter.
As a fellow type one diabetic, I know the real question on your minds - does this watch truly deliver on its promise of accurate glucose readings, as boldly stated on its Amazon page?
Their pitch involves LED light projections onto your wrist, analyzing blood flow velocity, and even featuring a built-in blood sugar detection chip. The dream? Glucose insights without the painful pricking or prodding, all while keeping up with your busy life for up to 7 days. Sounds incredible, right?
But, of course, we're not ones to take claims at face value. We're putting this smartwatch through its paces in the ultimate challenge - the accuracy-test!
We're about to uncover the truth behind this extravagant $150.00 Blood Glucose Monitoring Smart Watch. It's time to sift through the noise and uncover the reality. Get ready for some eye-opening insights! With the Sherum Track Pro 2.0
Welcome to the typ3me Diabetes and Lifestyle channel, your go-to place for connecting with fellow diabetics and sharing personal experiences. I'm no diabetes expert or nutrition guru, just a regular guy trying to educate and entertain my friends. Take a look around, watch some videos, and have a great time!
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Links:
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I was getting all excited, ready to rush over to Amazon… with those first two readings 🙂. This is my first time watching your videos… thank you for doing this.
I'm also T1D and really appreciate your testing here. I'm fortunate that we have access in UK to Freestyle Libre through the NHS, but people try to convince me that these watches are 98% accurate so finding tests like yours are really helpful. Many thanks.
Very good! A proper normal people test disclaimer earned my appreciation. Unfortunately, even a broken watch can display the right time twice a day and I believe that was the case. Thanks!
You're very welcome, Vrolok
yup... stopped clock right twice per day!
i have one as you said its not accurate, its all over the place waste of my $130 canadian lol.
Great video, love the dedication to testing it in real life rather than a lab with all the precautions that come with a lab environment!
I've recently been plagued with offers for these watches. I wondered if they were worth the investment. Thanks for taking one for the team!
You're very welcome!
Thank you so much for this video; very well done and very helpful information.
Thanks for doing a comprehensive set of test to prove that these things are designed to separate hopeful people from their money, they are toys, but I do appreciate your review of them and good job, be well. Larry
Thanks, Larry. I really appreciate it. Stay Well.
I didn't hear an explanation of WTH Decom is. Great video and I kept saying to myself this is the way I would evaluate this product. Clear, concise and no stupid excitement, music or noise.
Wow! Many thanks bro!
Awesome review! Thanks for being thorough and straight up :-)
You’re very welcome
Great video. Glad to see an actual comparison with a real meter, not just comments.
Thank you so nuch
Thanks so much for doing this review of this product. I think eventually this technology will be perfected, but obviously not yet.
Thanks, Denis. I appreciate the positive feedback.
Thanks for doing the research!
You're welcome, Johnny
This was great. Thanks.
You're welcome.
Thanks for the video. I've really been wanting one since I can't get a cgm. Oh well. Back to finger sticks.
Can't wait for one that is fairly accurate! Thanks for the post so many of us will not be taken advantage of!
You're very welcome. Hopefully, one day soon.
Nice job Sir.
I tnink they will be soon there.
Thanks ever so much.
Thank you for sharing this really helpful video. Really well done. Greetings from Germany
Thank you for the very kind comment, my German friend.
Good product review!👏👏
Thanks for your efforts. Come on Apple sell us what we need.
Thank you for the review. Like you, I'll be waiting for something good and new.
You're very welcome, Jacques
Gutted as want something like this for my son Thanks for the upload.
Awesome video..
Tim Cook famous quote,”we may not be the first but we are the best.”
Thank you
Great job
Except for when you went swimming, did you have the watch on the whole time?
Excellent tests. Really thorough. Thanks a ton for going through all of the trouble to do this.
Yes I kept the watch on the rest of the time as to gain as many readings as possible. Thanks for the encouragement I’m glad the video was helpful.
i take a soda pop to bring my glucose back up fast, good luck with your DB and thanks for the test
Many thanks for your videos. I was so tempted by these cheap Chinese Glucose watches because I’m 81 yrs old and hate finger pricks. But we’re not there yet. I have clicked “subscribe” to your web site.
Thank you so much.
You're very welcome sir.
Thank u SO MUCH. I HATE needles/pricking. U saved me from wasting money. This is depressing. It would be nice if this is all we'd have to do. I tried researching & to no avail. Thanks to you, I now know.👍
You're very welcome.
We are almost there on that feature….I hope it will not be long before a good one measuring accurately
Thanks! Keep looking for a noninvasive glucose monitor. I hate!! Paying the ridiculous pricing for CGMs
Thanks Matt I sure will.
Thanks for the information
You’re welcome ☺️
Im not even diabetic, but this was fascinating.
Thanks peach
Great video. Tyvm. I'm still looking a way to test my sugar levels while sleeping.
Nutri-sense is a great option. It requires you to wear a sensor but it works well.
Every video that I’ve seen that includes this type of function in a smartwatch review never speaks to whether or not it’s accurate. Thank you for finally getting some data out there. I would’ve loved to have done it myself, but just couldn’t waste the money on Strange branded watches.
Your welcome buddy
Thank you. You saved me $150.
Thanks for the video
You're very welcome.
Great video. I got mine for less than $50
Thank you!
You're welcome!
If apple invented such kind of device i will buy it no matter what will be the price
I'm sure you have a limit 😂 like 10k would be surely too much
Why would you waste money on Apple's garbage products that are designed to fail, not designed to be repaired, and not designed to be upgraded? So many better options than Apple.
At that point I would have check with my insurance.
Apple has been working on this since the Apple watch 3
@@CoffeenSpicebetter than replacing a CGM every weak, $300 a sensor. Or pricking my fingers 12 times a day (varies from person to person)
Interesting review, subscribed. Afraid I might be getting close to pre diabetes cutting sugar
and starting alt. day fasting. Guess I'll have to wait for Apple or Google/Fitbit watch.
Thanks for subscribing, George. Take care of yourself buddy, diabeties is a taxing disease, and I wish upon no one.
I really like that you pricked your finger and compared your Dexcom device to the watch, but in the end, I guess we will keep on waiting......
Thanks for the feedback. Hopefully one day we will have a useful non invasive glucose monitor.
I bought one of the $25 watches a couple of weeks ago. It is not even close but I had different results than you. It constantly reads 50-90 points low. I am wearing higher up on the wrist above my normal Casio watch. When I was wearing below the wrist there was no consistency or relationship to the glucose meter, it was always low. Now that I am wearing it very high its graphs in the program match my ups and downs, just way low. Like you, I am waiting for apple or someone to bring one out that is correct so I can hand my money to them.
FWIIW - The BP, heart rate, spO2 and temp seem to be pretty close though the sp02 readings have none in them (you will see a low reading and re-do it and get the right reading 10% of the time)
Great info. Thank you for sharing your feedback and experience.
Thank you for the testing, I am looking for a watch to replace me having to prick my finger. I no longer have insurance so I don’t want to buy supplies at full cost. Hope there is a watch out there that can do the job.
Thanks for the video, really useful and interesting that it is so far out with its readings. The instructions being so vague would be the first red flag for me, plus I would expect a device like this to need some degree of calibration, both initially and ongoing, to ensure accuracy. Can't wait for the day when Apple release a watch that does Bg readings because they will have tested it to destruction and will get FDA approval.
I love the verbiage "tested it to destruction." I think I may add that to every sentence today.
Thanks Brother 🫡
Thanks for taking another one for the team. lol
No problem 😉
At first, I was skeptical, as I use Blose on my G5 watch with my G7, and it works fine. Then hopeful with the first 2 results. Then back to whatever.
A $150 non-invasive option for monitoring sounds wonderful. It's just not there yet.
Changing the sensor once a tenday is fine for me. It rarely hurts anyway.
Hi Glenn, I agree the technology is close but just not close enough. I much rather have a reliable device than a trendy one. Thanks for the comment and stay well.
thankyou sir
You’re very welcome
Great video, I have always been a little skeptical about non-invasive glucose monitoring, hopefully it will get better, but who knows. If Apple ever does get an accurate watch, it might be the only reason I would leave the Android Ecosystem, but that's a big IF.
I completely agree. I'm a hard-core android fan, but if Apple gets it right, I'm switching also
Whats the brand?
My best guess is Ditto
@@typ3meApple can suck it, I'm never going to join the sheep side!
Thanks
I would expect Samsung to hit the market first before Apple with a BG sensor on a Galaxy watch. I will have to switch if it happens but I prob won’t be overly excited about it
Could be interesting to do a longer study on these watches. Maybe it's just that the readings, trends and graph are severely delayed compared to CGMs which are already 10-15m behind ? If that's the case, the watches could be somewhat useful to get a vague idea of bg trends during the day or night for someone that does not have access to CGMs ?
Hi BitRunner, thank you for sharing your idea. I agree this is going to be an interesting comparison to track over time. I will definitely take your advice and try to implement it in the future.
Ah, thank you for your quick response. It's not bad for the price. I ended up buying a lot cheaper. I bought 10 and sold it. Now I just ordered more. Thank you soooo much for your reviews. We need people like you. Amen. God bless.
As a diabetic that didn't know I was, it nearly killed me
Oh no!
That watch was looking promising for a second. As others said, when apple will have this our life's will probably be way simpler
You need to know one very important piece of information. The difference between Accu Chek and a watch is huge. Accu check measures sugar from the blood, while the sensors measure from the intercellular fluid. When I reported a malfunction on my Libre2 sensor, they told me that 10 minutes must pass between the blood sugar measurement and the measurement on the sensor. So I believe that this watch also shows its value well, but you should find out on which principle it works. It's a shame that they didn't write it in the instructions for that rather expensive device.
Thanks for the clarification, Mia. Although I have done many videos on this distinction. I only used the BG meter and CGM as a reference for trending purposes, not exact accuracy measurements. Thanks again, and stay well.
I fear this is the 21st Century "Search For the Holy Grail."
Maybe this is why Apple has not implemented it into a watch yet there is not a proper working sensor whether you like Apple or not, Apple does try to make a product that works as advertise
Apple's watch is NOTHING like these cheap Chinese watches. Apple's sensor has already been proven to work consistently. The problem for Apple is getting them approved by the FDA because the makers of diabetes blood sugar testing products are fighting this tooth and nail because they know once Apple's watch comes out their BILLION dollar business will be OVER. The FDA is corrupt as hell, which is why Apple has been talking about their watch for YEARS now without being able to get it approved.
The advertising on these non-invasive glucose watches are incorrect. They do not monitor "blood" glucose. It appears they monitor Interstitial fluid (IF) glucose. IF is the fluid around your cells and because it contacts capillaries it is an absorber of glucose from the blood. However, this means there is a delay due to that absorption process. It does not require transport as cells do for glucose to get into the cells. It is an absorption so it does happen faster than cell glucose levels. So blood is the source and IF is a relatively quicker absorber and cells require a slower transport. IF glucose monitoring does work but the source must be stable or a time factor considered. Notwithstanding a bad sensor, circuitry, or programming code of the watch itself.
The Dexcom and Libre also measure interstitial fluid. But they both have a wire going under the skin. Whereas all the watch can see, as far as I can figure out, is from the sweat under your watch, or maybe it's doing an infrared reading into your skin?
I am buying any watch that will get accurate numbers of My Blood Glucose, Blood Pressure, Heart Rate. Optimistic that Apple will hopefully make it to us one day
Any suggestions on which non evasive watch to buy ? Thank you for your time
Not yet but I will definitely keep you posted if I find a reliable one.
Maybe the american unit conversion is not malfunctioning? Try testing it for a week atleast. Great video nonetheless keep it up!
Where can I buy a dido glucose watch? I don’t see it on Amazon.
One quick question, did this watch have an allowance for manual fasting blood sugar input? If so, that might have improved its predictive accuracy towards glucose spikes at least. But I doubt it would be able to predict hypoglycemia or lows. Individual glucose curves and dips are probably far too unique and difficult for the algorithm to properly map, I'd imagine.
I believe it did have that feature. Luckily I cannot tell you for sure as I was able to produce this video in time to be able to return the device for a refund minus shipping costs. Since it was technically not accurate.
@@typ3me Cool! Thanks. Yeah for 30-40$, its a fun toy, and maybe worth a loss, but set back 150$ that's an investment, I would expect better accuracy at that price. Good for you to send it back.
Thanks Man I brought one from Ali Express is totally False reading all time comparing to My old fashioned of checking BS. Please Apple or Samsung help I don’t like stabbing my Finger it’s really painful 😅
The BP on it is good as I compared it to the cuff bp. It was off a little.
Please do a review of the MymonX glucose watch
Where is it available?
Depends on the use-
your research was not specific to the population addressed,
This watch seems to be of great value for early Dx dm2 or Diabetic type 2 early stages, in other words, not seeking to discover Hypo or severe glycemic values.
I would not use it on a population the detection of critical values is necessary,
I suspect that
If you are someone with hyperglycemia stable, not brittle, or not leading to life life-threatening situations, if there is any doubt, I would confirm with the more invasive monitoring.
You are right, more sensitive and specific devices should be developed. Understanding it will creep the price initially 3- 5x.
🤣
I wonder if the watch style has a different lag on it. Get the graphs and see if numbers are the same but offset in time.
Would be cool to download the data
Even a stopped clock is showing the correct hours twice a day...
At 1:26 : " ... now let's get ready to separate HYPE from FICTION ... " Lost me there.
Thanks for sharing, I don't really think a watch can be that accurate when it comes to reading, glucose in your system. The price is a little steep for me anyways.
Could you please review the Wolfnotch Suga Pro?
Thank you for the suggestion. I'll definitely consider it once if it begins to gain a reputation for being a legit contender.
Don't worry Apple will save you one day with a savoury price 😂
Cucumber will settle your glucose level its amazing ❤ i take a whole cucumber every 2 to 3 days 3 cucumbers a week basically just enough to like eating cucumber
So with some tortilla wraps or bread or as a side dish or just in slices
Thank you for the advice. Although dietary changes can be a life changer for most type 2 diabetics, type ones have a condition that disables the pancreas to do its job almost completely. For this reason we have to poke our selves with needles to deliver insulin externally because our bodies no longer produce it. Diet does help us require less insulin but it is still necessary regardless of the amount of cucumbers e we consume. Thanks again for the advice and stay well.
@@typ3me correct it is very wise not to take any sugar aswell since the insuline levels are going up very high
when consuming sugar
Which is also the culprit of diabetic overweight
First of all stop taking sugar then people will experience weight loss which is neccesary to activate the pancreas in type 2 diabetes
The pancreas is suffering from fat around it which has to go away aswell as other organs with too much fat around it.
The fact remains that it is really difficult to not take any sugar products
And therefore the zero sugar diet is especially as well as the glymatic index of different types of foods
High levels of insuline in the blood also leads people to feel pretty much exhausted with kind of a dizzy feeling sometimes speaking weird aswell moving slow and very very tired resulting in laying in bed real overtime which in fact feels nice but is really wrong if that insuline level goes down then people feel really so much better and gain energy and momentum
This is also where the cucumber comes in pretty well and does its job pretty amazing to lower the glucose levels and so the insuline levels in our blood
Sugar is the killer in this game
Also blood vessels are being degraded and can end up in the long run in real ampution of feet and even complete legs. Also eye sight is being degraded which can cause people to go blind.
Nowadays you see more and more young kids with glasses
Most of the time the glasses are the effect of reduced eye sight caused by child diabetics which has to do with the diet of the child in most cases. Since so many kids nowadays are litteraly overweight they can easily develop diabetes
Hopefully this will help
Thank you for this!
I was looking at getting one of these but now im going to save my money.
If apple came out with one i would be more likely too trust it because they are not going to put 💩 on their inventory.
You’re welcome. You’re right apple normally takes the time to put out reliable products. Im hoping that the watch 10 will launch with it this year but it’s more than likely gonna get pushed back.
Thanks for posting this. My guess is that the manufacturers of these smart watches might be using skin temperature as a proxy measure of blood glucose level. Not entirely wrong or disingenuous in my view, because there is a complex but relatively proportional correlation between body temperature and glucose level (higher body temperature often reflects high glucose level and vice versa). The relationship is approximate at best; and the additional complexities relate to how our skin may or may not corelate directly to fluctuations of actual blood stream (body) temperature: different parts of the body have different skin temperatures; environmental (room temperature/humidity) would affect these readings; plus, stress (due to hypos or exercise nervous tension etc) have complex effects on skin temperature. All in all, I suspect that these smart watches are not entirely useless, but may be calibrated to perform best under optimal conditions that are seldom universal to all situations or all people. Best wishes.
Thanks for the information I've never heard that before but I'm sure there is some truth to it. I appreciate you sharing.
I think it's more a question of the tuning parameters applied by the manufacturer. (I'm a process engineer, so background in process control). I recently bought a watch from Shein, from a manufacturer in China, but all the readings I've had so far were in the "good" region. I wish I could access the raw data measurements, before they've applied their tuning factor.
Thanks for the review! Excellently conducted. I have to agree 100% these watches are dangerous for diabetics to rely on, you would be better off testing urine sugar like the 1950s, to see if the renal threshold was exceeded (i.e. over 160-200 mg/dl+) than to rely on these watches. I have the F57-L watch, which you reviewed earlier. It basically is a random number generator for glucose, never below 6 mmol, or over 7 mmol/L, either a built in design flaw or just outright practical joke, a toy. I also got the Filiekeu F57, both of which use the H Band App. To be fair, The F-57 Filiekeu has some good features such as apnea detection and Sp02, and is very much like this watch, only it was 40 $ not 150 $. But, I think all these H band paired app watches use a similar proprietary algorithm day to day, baked into their equations with pre-programmed humps (assumed glucose spikes after each meal, at 10:30 AM, 3pm, and about 8 pm.), but not tracking real world actual spikes. So technically, that is a kind of fraud, intentional or not. However, that aside, the semi redeeming feature is that the F-57 and some of these other watches allow a manual input of your estimated fasting glucose, which then allows the pre-programmed spikes to somewhat better approximate real world curves better (glucose tends to spike 50%, after meal, and dip 50% at night or during lows, above and below the average glucose level, as a rule of thumb). When I averaged out my blood glucometer readings to the F-57 Filiekeu I get about a 85.5% accuracy. I am not diabetic, My highs postprandial 1 hour and 1/2 hour respectively were 127-144 in my glucometer, and 141-157, on the Filiekeu (between the normal mode, and custom adjusted modes at 90 and 99 mg/dl fasting). In the fasting state, which for this watch is pre-programmed at before 9 AM, again at 12 Pm, 4-6 pm, and after 10 pm, I have also tested 2 other people, and got relatively accurate results *to their known labs. They had fasting glucose of 79 and 110 respectively, whereas mine hovers between 90 and 99. In any event I believe these watches at best can give a ballpark, for NORMAL range blood glucose individuals, but can be wildly off for anyone with hyper or hypoglycemia, AKA diabetics. All and all, maybe in time the technology will improve, and it def. is intriguing, but until the proprietary algorithms can be cracked, and allowance for customization (such as Artificial intelligence taking into account all the variables of BMI, Blood pressure, Age, pulse wave, HRV, HR, temperature and Sp02, the last time you ate etc. ), these infrared light watches are going to be shooting off target. When I averaged my results out, between normal mode and custom input mode on my F57 Filiekeu watch, my average eAG was 102. approximating an A1C in the ballpark of 5.2, which matches my glucometer derived A1C estimates (5.1 -5.4) on two different glucometers I have. So for me, the F57 is about as accurate as a crappy glucometer 85% accurate, whereas FDA allows glucose meters to be as inaccurate as 80% .
Thank you so much for your detailed and insightful comment! Your thorough analysis and experience with the F57-L watch and its related models are truly valuable. It's evident that you've put a lot of effort into understanding their performance and limitations.
Your observations regarding the watches' accuracy for individuals with normal blood glucose levels versus those with hyper or hypoglycemia are particularly noteworthy. It's promising that these watches have the potential to provide ballpark estimates for people within the normal range, and your explanation of how manual input can improve accuracy is quite enlightening. I appreciate your perspective, your comment adds a lot of depth to the discussion around these glucose-monitoring watches, and I'm grateful for the knowledge you've shared. It's clear that you've approached this topic with a critical and informed perspective. Thank you again for taking the time to share your thoughts!
@@typ3me You bet! And thank you for your in depth videos and blood test comparisons! Invaluable. I think we can unanimously agree then, for diabetics, these watches are inaccurate at best, and dangerous at worst. A glimmer of hope though, if the technology can be perfected and better algorithms developed. Yes, the calibration feature did improve accuracy I believe, considerably, but technically that means the device STILL depends on a blood input, for finer calibration, when the whole purpose is non-invasive accurate estimation.
I absolutely agree.
I have the cheap version of one of these. Looks to me as though the daily variation pattern doesn't vary from one day to another, despite what and when I eat. Superficially convincing and absolutely not reliable. That also sprays doubt over all the other data it produces.
I live in the Philippines and the link doesn't work for me. Can you please name the brand and model name so I can check if its available here? Then again... nevermind. 😂 Thanks for the review.
They are mostly junk for catching big swings. They take a while to catch up to reality. At the same time last summer I was supposed to refill my sensor script a couple of days before going away on vacation. Turned out the script was expired and they needed a refill, so the sensors would not be available on time. I got desperate then saw the watches on Amazon. I figured in an emergency, I could give it a try. Good news, it did help just enough. Bad news it really dragged on catching my one low blood sugar event on vacation. Good news there was I have decent awareness so, took care of it before things got really bad. So, these can be vaugly useful in a pinch. Just don't make a habit of relying on them. Hopefully, we will soon see better sensor tech.
Great info, thanks for sharing.
8:15 84 … is the battery percentage of the watch 😅
from what i've seen from people reviewing the watches, it appears they have a HUGE delay in following the current trend of your blood sugar. like it takes a lot longer for the highs and lows to be readable in your surface skin the way the watches attempt to read the glucose.
That's what I was wondering. I'd like to see a graph over time and see if the watch's readings catch up and how long the delay actually is.
Seems to have disappeared from the Amazon store, even their cheaper watch. So not sure what happened but searching in a few other outlets it's gone from there too!
I’m actually relieved. It did not feel comfortable with people using these devices.
I was unable to find it online either. Must have been forced off the market.
An interesting test with this watch would be have been to wrap it around a paper towel roll or something that’s like a human wrist, but isn’t. My skeptical thoughts are that it’s just throwing numbers at you, hoping that they’ll be close enough for enough of the reading comparisons to make it look like it’s doing something.
If it says a roll of paper towels has a BG level of 127, you know it’s all snake oil (snake watch?).
BRILLIANT!
When and where should I buy this product, since am a diabetic type 1 in a blood sugar fluctuating mode 😥 PLEASE HELP
Unfortunately, I would not recommend buying this product
Hello, the product link no longer connects, but could you tell me the exact model so I can search for it? thank you
It appears they have removed it completely from Amazon.
Can't find the watch in amazon, the link is not working.
Here in the Philippines cost me less than $16.
Why do some devices that measure blood glucose require a prescription and others don’t?
Devices that require a prescription have been approved by the FDA or the EMA. This requires years of testing and trial for efficacy.
Just like every other "glucose watch" it's off way too much for me. I'll just stick to my glucose meter.
Such a pity… I would have loved to buy one for my mum.
I’m not diabetic but want to monitor my sugar levels to make sure they don’t get too high. I have been looking at these things but so far, none I see tested seemed to work at all. QUESTION; Glad you can change to mg/ dl, thanks
You’re welcome Jerry
If these guys can put it into a watch, however wonky, then Apple with all their resources can and should do it and soon.
Never use alcohol to clean your fingers to check your blood glucose levels,this is not the right way.Just wash your hands with soap,dry them well,than wipe the first drop away and use the second drop to measure your blood glucose levels. This I know, because I'm a Type 1 diabetic for more than 20 years.
Thanks, Martin. A as Paramedic currently working in the field and type 1, the preferred method is still good old-fashioned rubbing alcohol. However, you should always do what is best for you. I am well aware that everyone is different, and what works for me isn't necessarily what is going on work for you.
Tom of Type 1 talks tested 3 of these watches and came to the same conclusion: they can't be used for diabetics, they are just not accurate enough.
Yep, I know Tom he’s a good and trustworthy dude.
Could the inaccurate numbers have to do with the extra time that it takes for glucose to reach the interstitial fluid? What if you waited a couple of minutes?
That’s a good guess. I’m not even sure what these lasers are intended to read. Blood, skin. Interstitial fluid. It’s all very unclear.
I would not buy an Apple watch.
So if the Pixel Watch or the Galaxy watch added this accurate feature. Then I would buy that.