The possibility of music from an SD card (supports up to 16GB) play, I did not use. I have only my mobile phone using the supplied, gilded at the ends 3.5mm connection cable connected to play music files and Internet radio. The result is good. However, the heights rattle slightly at full volume and too much bass can not be expected. The speaker came with some kind of velvet sleeve and makes a very "valued" and stable impression. Except for the buttons and the card reader part everything is made of aluminum.
Ultimately, however, I have decided against the Ricco P18 as it Notebook Speaker Sonic Mobil 400 Alu system in terms of sound and volume somewhat lagging behind in comparison to Hama. The "mini hi" from Hama is however not nearly as well-made, stylish and has no eingbauten battery, but only a battery compartment in lacquered plastic.