I just received it today and tried it out immediately on my mattress (150x200) over the mattress protector.
I did a quick test, yet it picked up a lot of dust along with hair!
I really couldn't believe it!
It didn't cause me any problems and the whole process was easy, it glided smoothly over the surface and it was quite powerful!
I will continue with the rest (sofas, etc.) and wait to make a more thorough evaluation.
As a first impression, I am satisfied!

Mediocre device. And let me explain:

First, its suction power is low. It is mainly for surface dust.

It tore the protective coating because to activate the UV, you have to press it. However, its little wheels are low-quality plastic bearings, and obviously, the coating got caught in there and tore as it spun. So, you pay for a cheap thing, but it can end up costing you more.

On one hand, it tells you to press it to activate the UV (and I pressed it just enough), on the other hand, if you press it too much, it can tear the fabric.

Now, regarding effectiveness, okay, with 450 watts, don't expect much when a vacuum can reach up to 2000 watts.

I do not recommend it.

I couldn't believe my eyes what is in the mattresses and pillows. For its size, very good absorption capacity, easy cleaning, and very effective. It did NOT overheat as many report because I did NOT use it on soft mattresses and pillows. It easily clogs and overheats on those. Very nice device.

It stops every 8 minutes overheating and burning

Today I received the Deerma CM800 Electric Vacuum Cleaner for mites and immediately started working. The photos are from one side of the double layer with minimal use... quality and powerful

For a week of use, on a double mattress and two sofas, I would give it five stars! The photos are from one side of the mattress with minimal detail. It attracts cat hairs, just so you know. I will use it every time I change the cover and sheets! For its price and even with the things it produces - yuck! - I still recommend it, even if it's not hypoallergenic

It collects a lot of dust and does a good job. It is not a device to clean all surfaces at once because it heats up, as I believe any such device does, since there is contact with the surface without the air created escaping from anywhere, unlike a regular vacuum cleaner. Maybe, of course, it is enough for a few more surfaces if it is more expensive. However, for its price, it is a good choice. It is ideal for use after changing sheets, covers, etc. Personally, I noticed a difference in my eye allergy from the first few days of use. The photo is after vacuuming a double layer.

The first use of the mattress produced "dirt" and I really wonder how all of this was found inside. It seems like an excellent choice though!

One night suddenly we couldn't sleep because of the itchiness. The next day I ordered it right away. I cleaned the mattress and the bedsheet with breaks as it was overheating, but the result was worth it and more! The amount of dust it removed was endless. It's been about 4 weeks and I haven't used it again. I ironed the sheets and washed them at 60 degrees to minimize the chances of itchiness! For those who don't have a vacuum cleaner with a filter or hate using it, with a total of 40€ they can buy this and solve the problem. The downside is that it heats up. However, it's not such a big disadvantage considering the low cost and the fact that most devices of this kind heat up at a higher price.

Excellent device! It does exactly what it says! With frequent and short use, without pressure, it collects a lot of dust, so I don't have to wait for it to cool down! Even my nighttime rhinitis has calmed down! I am truly thrilled!!!

It requires a lot of pressure to clean as deeply as possible, and you need to go over the surfaces several times. Because it is slightly heavy, your hands get tired after a while.

It overheats and stops, the cable is long as well as the collection container, the price is economical, I read good reviews about it so I bought it, but I do not recommend it because the dust it collects is only superficial.

Very sturdy machine. I expected it to suck up more. The best thing is to beat the carpets on the balcony like we do with rugs and then use this as well. Personally, it doesn't shut off when it heats up. It needs filter cleaning with clean water after each use. I don't know if the vibration and blue light really offer anything. It sucks up a lot of hair too.

Buy it with closed eyes. It does EXACTLY what it was designed for. As for the issue of overheating..... If you use it CORRECTLY, there is NO problem. You don't press it excessively, just enough for the blue light on the top of the device to turn on!

It really did the job, also it doesn't shut down on me when it gets hot! If it was a tad lighter, it would be the perfect product for cleaning!

Unbelievable what it removes from mattresses that appear perfectly clean and makes you wonder where you've been sleeping all this time. After the first use, you realize how necessary such a device is in the household. The only major drawback of this device is that it cannot handle a king-size mattress without overheating and needing a 20-minute cooldown. So if someone wants to clean mattresses, sofas, office chairs in a family home, we're talking about many interruptions. If this doesn't bother you, it does a great job and sterilizes with the UV lamp. However, there are other more expensive options, as I read, that don't require such frequent breaks but come at a higher cost, which I am considering because I want to use it every two weeks to a month. I believe it is necessary for our health to get rid of microorganisms and dust as much as possible. If you don't mind the frequent breaks during usage and can organize it, it's worth it.

Very high quality as it is essentially from the company Xiaomi. Very easy operation and the bin is leak-proof. It removes a lot of stuff from the mattresses without me being able to say if it is very or slightly effective. Anyway, for the money it costs, it is excellent.

I don't know why many people here say that it does the job. I saw these comments and I bought it too.
I tried it on a 2-year-old mattress. It didn't pick up anything at all. Empty bin. Well, I can't even call it a bin, it's more like a little container. I vacuumed the mattress a second and third time and still nothing.
The suction point for the dust is very small and with very little power.
Money wasted.

Before I proceed with the purchase, I watched many videos on YouTube, I didn't believe that it actually works until I tried it.... it's worth it and it does what it says!

Reevaluation:
The product stopped working after the first use.
Specifically, the suction function.
I filled out the replacement form as defective and I am waiting

VFM vacuum cleaner for cleaning beds, sofas, pillows, etc.

In the positives: It cleans by suction, hot air, and UV light. Its use is very easy. It is not particularly heavy, its cord will be convenient for you because it is very long, and its filter is very easy to clean.
In the negatives: It makes a lot of noise and using it for a long time will tire you. Additionally, if you want to clean 2-3 beds and sofas, you will have to take breaks in between because simply the vacuum stops working - due to overheating - and you will have to wait for it to cool down.

Overall, it is a good purchase for anyone interested in something related.

It's an amazing tool, guys. The build quality is very good and from the first uses, it already does a great job. It collects a lot of dust, the first few times the filter was full and I noticed a difference in my sleep. You sleep more comfortably and feel that where you sit is cleaner. Especially in the first uses, it can overheat due to excessive use, but you let it cool down and everything works fine again. A very good tool.

Update 14/9/2022

Along the way, I have to say that it gave me a problem and the part that sweeps and lifts the dust was not working, so I sent it back.

I haven't used it for a long time to have a detailed opinion. It is easy to use, has a long cable, and doesn't require a balancer. The bed released a lot of dirt, like fine dust, which I consider dead mites and skin. Due to my allergies, I can say that I slept better without completely congesting like other nights. It probably does a good job

It was a surprise for me.
I couldn't imagine what a seemingly clean mattress could hide...

I did all the mattresses (1 double, 2 singles) at home and it was truly a revelation what I saw...
(I had seen a video on YouTube before buying it, but I didn't expect something similar on my own mattresses, as I use an electric one and always put a mattress protector).

I am very happy that I made this purchase.