Enjoy your music on the go with this RockDoc Pitbull BOOM 900582 2-way speaker that features 4GB of memory and supports microSD cards up to 64GB (not included) to store your favorite tracks. The 1-7/8" aluminum-vibration-film speakers deliver rich sound.
I purchased this speaker because I liked the idea of incorporating an MP3 player with a portable speaker. Good idea, poor performance. When I opened the package, I was able to connect to my computer and download some songs, but soon found that the speaker's battery would not charge and the speaker will not play without connecting to a power source. The documentation stated I could add a micro SD card for more song storage, but the speaker would not recognize any micro SD card. In fact, the second time I connected the speaker to my computer, it would not work at all. I couldn't see the files I had loaded onto it, or get it to play when it was connected to my computer. The best thing I can say is that when it does work (while connected to a power source) there is considerable volume available for such a small speaker. Overall, I wouldn't buy it again.