I bought one of these for tailgating, very good sound out of such a small speaker.
How small is it? The third image seems to show two different versions of this in different sizes.
About 4x11 apparently https://www.techweekmag.com/news/speakers/philips-s7807/
Mine is about 12" long, and 4x4. It’s pretty heavy for its size. Feels tough. Big battery=long playtime at moderate volume. I’ve bought a couple for myself and 3 for gifts. Very impressed with performance and sound. Very good value.