The OontZ Ultra-Portable Wireless Bluetooth Speaker by Cambridge SoundWorks
This speaker is not very loud, I had to constantly use it on the loudest setting and it was very often still an inadequate volume. Also, after about six weeks after receiving item, and less than 20 hours of use, it just stopped working I would avoid it at all costs Too late to replace or return through Amazon, I should have just burned the money for some extra winter heat