I uploaded this video so you can get an idea of the speaker’s power through your phone. I don’t know how accurately the actual volume comes across in the video; perhaps if you use headphones, you’ll be able to understand it a little better.

In short, its volume is more than enough for a room. If you turn the music all the way up, your ears will genuinely hurt and then ring a little. In an indoor space, when it’s playing loudly, it’s difficult to talk to someone else.

I think it would do a very good job outdoors too, especially if the space is relatively enclosed. I haven’t personally tried it outdoors yet, but judging by how powerful it is, I wouldn’t want anything larger for my needs.

The sound quality is very good in my opinion. As for the bass, which I’ve read some people say isn’t very strong, I personally find it perfectly fine and am quite satisfied.

It connects to your phone via Bluetooth and is incredibly easy to use. Essentially, you operate it just like the Bluetooth headphones you use to listen to music from your phone. You simply press ON on the speaker, and you don’t need to do anything else with it. Then you turn on Bluetooth on your phone, connect to it, and in about 3 seconds you’re ready to play your music. From then on, you control everything as usual from your phone.

As you can also see in the video, it has a USB port and a TF Card slot, and I think it can also be connected to a microphone, if anyone needs that.

I should point out, of course, that I don’t have experience with other similar speakers, so I can’t make a direct comparison. There are certainly better ones out there, but for its price, I personally think it’s very good, and I’m completely satisfied with its power and sound quality.

For more information or more technical details, you can look up Crystal Audio and contact them by phone, so they can answer any other questions you may have about the speaker.

* I’ve tried many times to upload the video in various ways, but it keeps getting rejected. What a shame.... I hope the description gives you enough information.

If I rate it without considering the price of the product, it is VERY average in sound and build quality. However, taking into account that you only pay about 150 euros, it gives you the following:
1) You actually have a fairly powerful sound, quite powerful compared to the JBL Extreme 3 (of course, it is much larger in size).
2) It has a battery, so you don't constantly need to search for an outlet.
3) It has a built-in wireless microphone which surprisingly is quite good, it doesn't lose signal, etc. Now, in terms of sound quality, it's like a festival in Bonitsa, but it's all in good fun.
4) You have many connectivity options.
5) You have many options to adjust the sound to your liking, bass, treble, etc.
6) You can easily cover a party with this, as long as you don't expect the house to shake from the bass, because even the bass is almost non-existent.
8) It is an affordable all-in-one solution that is worth its money!
9) The lighting also has many options, but it also has its own charm.

Now, the negatives:
1) Non-existent bass that tries to compensate with excessive treble.
2) Poor build quality, I received it and it was already broken, possibly due to shipping. But it also seems that the material is not of high quality.
3) It is quite heavy.
4) It is meant for loud sound and fun, you will not hear any quality from it, not even as a joke.
5) The on/off button gives the feeling of a carnival game and cuts off the power so abruptly that it makes a popping sound every time, which sounds like it's straining with unnecessary power.
6) Considering its size and weight, it could hit harder.

Final result:
I believe it is PERFECT for fun, parties on beaches, rooftops, with friends and such situations. You don't have to carry amplifiers or worry about damaging good speakers or anything... You throw it in the trunk and you're good to go. I just want to emphasize again, don't expect to hear any bass or quality sound at all... Luckily, it doesn't have any signs of distortion or coughing, it's just that if you have good speakers at home, you will realize from the first listen that this speaker is not for you, it's for the company and fun.
P.S. I still don't know about the battery life because I constantly have it plugged in, but it lasted for 4 hours without turning off once when I had it unplugged.