Han Solo and his Millennium Falcon were very well acquainted the Imperial's Star Destroyer ships, having been pursued by them many times. Han enjoyed calling them Star Cruisers, but that gives the impression that they were casual ships when in reality they were fast and deadly. It wasn't until The Empire Strikes Back that we heard their proper name.
These space vehicles were large because they held TIE Fighters inside their hangar bays. This is why these ships are almost always seen battling with TIE Fighters against their enemies.
The Star Destroyer speaker lovingly recreates the look of this ship and is loaded with details. It comes with a base that you can set it on and Bluetooth technology allows you to use it to play your favorite music or audio, up to 30 feet from the audio source.
There are LED lights all over the body of the ship that light up when the speaker is in use, as you can see from the picture below. You might also think that the lights in the back light up since it looks that way in the picture above, but this is just creative Photoshopping on the part of the manufacturer.