WOW, the only thing I have to say is, WOW... I bought it just yesterday, from a Chinese store in my city for 10€, and I really have to tell you, as I was looking at it, I couldn't believe at all that it would turn out so good, especially at this price, and of course I didn't expect it to have more than one function, for example, I only expected it to be very simple and to have only Bluetooth and radio function, and that's why I was incredibly surprised when I opened it and saw that besides those, it also had the function of playing mp3 songs through a USB stick and TF card, along with even a line in line cable to connect it to any other device you want. I was truly speechless and very excited because this has all the functions I ever wanted, in other words, IT DOES EVERYTHING!!! I still can't imagine how something so CHEAP has all these functions, because you know, a week before I bought this, I bought another speaker from a local store, which was smaller and cost exactly the same amount of money as this one, but it didn't have any of the functions that this one has, except for the basic, simple Bluetooth function, and it also didn't accept any of the two external storage devices that this one accepts... So, you see, this is the reason why I said at the beginning that I was surprised when I first tried this, since for both, I paid the same amount of money, but I truly believe, without wanting to sound exaggerated, that this speaker is a huge value for money, especially considering the fact that everything it offers is exactly the same as what any other higher-end speaker offers, with double or triple the price, in fact! In conclusion, I want to mention the only two negative aspects I found in this, and also the reason why I gave it a rating of 4 stars instead of 5, which I initially planned to give... Firstly, the main negative aspect I noticed is the battery, which after a short time of activating it for the first time, it ran out and the speaker abruptly turned off while playing a song, leaving me with a big question and fear, initially thinking that something was wrong with it, but after 2 minutes, it crossed my mind that maybe the battery had run out, since I didn't charge it before using it, so I connected it to the power outlet, and when I saw it turning on again, I felt relieved... However, when it started doing the same thing today, 2 or 3 times before I plugged it into the power outlet and left it there to charge for a while, that's when I realized that the battery couldn't last for more than an hour or an hour and a half, even though the box said it could last up to 5 hours, and that's why I understood that it might be faulty and I can't have it far away from the charger for long. Secondly, the second problem I have to mention, which was amazingly solved very quickly, is that at the beginning when I tried to listen to songs from the FM radio, it had constant interference and the sound wasn't clear at all... I thought this would be a permanent problem, but very soon it turned out to be temporary, as after about ten attempts to make it play clearly, I found the station storage button, and by pressing it, everything magically fixed, without knowing exactly how, since the stations were already stored from the beginning, they just didn't play very clearly... THANK YOU, REALLY, THANK GOD FOR OPENING MY EYES!!!