24/7 Blood Pressure Monitor, Black

I had read mixed reviews of the device, but wanted to check it for myself. Sometimes it’s the case people may not have followed instructions properly etc. I followed them fastidiously. I have a high performance standard electronic BP monitor already which I know to be accurate against readings made by cardiologist. I also have a cheap wrist one too. Ran the Aktiia for a day and was shocked at how low it was reading my measurements to be. As someone being treated for high BP and frequently doing readings, I know broadly my patterns. This was giving pretty different readings. I pursued it for another day thinking that perhaps there was a small chance Aktiia was more representative as it was not subject to a white coat effect which was possibly happening whenever I used the regular cuff. After the second night it was recording BPs that would actually be dangerously low. I was highly skeptical of the accuracy now. By the evening I decided to run an experiment due to totally uncredible data. I sat kstill with Aktiia on and also my regular cuff on the other arm. Waited until I saw the Aktiia activate (you can see a small green glow) and then after it took its reading I immediately activated the regular cuff. The differences in reading for the exact same time were staggering: Aktiia registered 129/80 (pulse 66). The regular cuff registered 154/94 (pulse 65). Clearly this is a statistically very significant difference. I then used my cheap wrist cuff as a third comparison. It registered 153/95 (pulse 66.). As you can see, the two ‘normal’ blood pressure monitors had high consistency with each other, effectively giving the same reading as each other. They also provided readings that have been more consistent with my known pattern. The readings they gave illustrate significant clinical hypertension. The Aktiia in contrast, under the same conditions provided a reading that would suggest minimal to no hypertension. Other results it has produced over the previous two days follow the same pattern as above, although slightly less markedly. This product is dangerously inaccurate. I am staggered at how it’s ever achieved any clinical approvals. In my opinion, and from my experience of it, it should be immediately withdrawn from market for its complete inaccuracy that could severely place patients health (and lives) at risk through completely false and inaccurate readings. It’s not even toy/novelty grade as there is no relation between the data it’s collected of mind and actual real data by two validated devices which are showing consistency with each other. I should add, there is virtually no way to speak to a human in the company - just an AI chatbot. When you persevere with this for a long time it eventually lets you send their staff a message, to which you’re told a reply will be sent to you within 3 working days. Mine still hasn’t arrived - but nothing they can say would make me want to keep this device. It’s worse than useless. I’m my experience, it is dangerous. I have just actioned an Amazon return and would urge others not to go anywhere near this.

Easy to set up and works well. I barely notice the bracelet on my wrist and I'm getting 20-25 readings a day, so a decent trend of what is happening to my blood pressure through the day.

not most precise but still useit, more important to keep an eye on measurements and see if they trend up or down, as they are relative to you.however with Aktiia with no subscription and all the features, this is now Hilo and you have to pay for the features (so giving 3star not 4) or go on free subscription which only shows 7 days history. so less usefull unless you pay the extra for what used to be free.only additional thing is sync with apple health, but you used to be able to use bpExtract app to do this previously.

Had it for about a week and using in conjunction with a new, well known branded upper-arm monitor. It works by taking an initial reading from the supplied arm cuff then the bracelet monitors the artery expansion and contraction in the lower arm, so the initial setting needs to be accurate as the measurements are relative. The upper arm measurements of the cuff was reading my Systolic slightly higher than the other one (155 rather than 140) but the Diastolic were both the same; lower 90's. I have a reasonably large wrist and wear it on the last hole, just above the wrist bone so it's not too tight but can't spin around.I get regular readings, both day and night and battery appears to last for a week - but as it's new, I'm syncing it quite regularly. It's nice to have something that works continuously without you have to take regular measurements.

I was excited to try this wearable device - as I agree with others who have said that the digital health revolution has largely ignored blood pressure monitoring, and there needs to be better solutions than the traditional cuff measurement.I was curious because there are quite a few positive 'reviews' and recommendations of this device online and so called clinical trials (important to look at how these are funded and if independent)-- and so I wanted to see for myself and write an honest review to help others decide (as I was really unsure before buying it).In summary a wearable device like this can't quite match the accurate clinical measurements of a traditional cuff (yet). The Aktiia was not up to scratch, with readings being out by 10-15 systolic (and 5 diastolic) points over several weeks. In the end I've sent it back for a refund, because fundamentally I couldn't trust the readings at all and that has medical implications.In detail:The box contains the watch, the charging station (see pictures) and a cuff for 'initialisations' (a process where the cuff takes three measurements to basically enhance the watch's accuracy). The instructions are relatively easy, and come in a thickish booklet though could do with having a shorter 'quick read' version as they're very long. There was one point where it refers you to a different part of the booklet to charge the cuff for the first time -- which you have to do, but that section is nowhere to be found, so I was left guessing which was frustrating.I wanted to track my blood pressure overnight and during the day. I have low blood pressure (hypotension) and need to know when it has fallen. I conducted several initialisations with the cuff at different times of the day -- in fact I kept doing it with the Aktiia watch and cuff over several weeks, and then compared each reading with my traditional cuff measure (from Boots). Each time, the Aktiia was highly inaccurate. The Aktiia showed the readings to be 10-15 systolic and 5 diastolic points higher than it should be, so was giving the false impression that my readings were all fine.I generally know when my bp has falled because of how I feel. Each time I did my trusted bp measure (from Boots) which showed my bp had fallen/was low, and then did a spot measurement with the Aktiia -- each time the watch and cuff gave a much higher reading. This potentially could be dangerous if you were relying on this, as the app tells you all is okay when it is not! If you have hypertension then elevated readings would also be misleading.Even though each 'initialisation' was inaccurate, I decided to continue wearing it in the hope it might give more accurate readings day and night. But it gave remarkably similar readings to the initialisation each time. Therefore are the readings based on some algorithim rather than any actual clinical measurement??Some other irks: the cuff is not easy to put on -- it kept falling around my arm. I tried to do initialisations with it a bit looser, then a bit tighter to see if this made any difference to accuracy (it didn't). It wasn't intuitive or easy to know how tight to put it on your arm, and it kept flapping about.The watch strap is not made for people with smaller wrists - the strap stuck out and kept getting caught on things. As the strap has to be on fairly tight, it did make my skin a bit itchy. I could live with that though if the readings were right.The app is basic - it did synchronise quite quickly each time and it's relatively easy to use. Each reading is based on an average taken that hour. It kept telling me that my 'Time in Target Range' was 100% below 135/85. But this message is absolutely misleading for hypotension or people with variable blood pressure. Would I recommend this for people with hypertension? No, because I could not trust the watch to give accurate readings.The two stars are for the look of the watch and the packaging which looks smart like an iphone box, and for the company trying to do something different here - but apart from that I could not recommend this to anyone because of the highly inaccurate readings, which have serious potential clinical/medical consequences for both hyper and hypotension.