I bought the BOSE SoundLink Mini Bluetooth Speaker, and wow! What a great sound quality from such a small unit! And the build quality is very good too. Feels very nice. It also has a built-in rechargeable battery that charges when the speaker is on the docking station. That means that you can take it with you everywhere. Very useful. I like it a lot.
It was very easy to Bluetooth pair it with any phone too, just a click of a button. and you can pair it with more than one device too, and then switch between them with a click of a button.
I can highly recommend the BOSE SoundLink Mini Bluetooth Speaker. It's a bit expensive (1900 SKR) but I think it is worth it.