Anything Speaker PRO - Turn Anything Into A Speaker - Mini Bluetooth Travel Speaker - Bone Conduction Vibration

There isn't much to say other than it simply works. Turn any hardhat, bucket, trash can, plastic tote, microwave(yes i actually tried this), and anything else with hollow resonation that you can stick it to, into a loud speaker that yes you can even hear bass from. It's quite shocking how well it works, it's not a gimmick. I got some of the smaller size ones with the suction cup mounts as well. You stick one of those to a hard hat while your wearing it and it sounds like you have JBL surround sound on your head. It also works on metal sheds, tested it on a large metal building by attaching it to the outside and when you went inside it sounded like someone was playing a boombox. If your wondering how it works it's the same concept of bone conduction technology, it transfers the music through vibrations to what ever you put it on, so you want it to be something "hollow" that will allow it to resonate.

Excellent output for the price.

This thing is seriously impressive! The sound quality kind of depends on what you place it on, but it works really well on glass and other hard, thin surfaces. The audio is very clear. We held it up to the wall in the hall of our office and you could hear the audio very well all throughout the office. We also tested it on our window and you could hear the audio very well both inside and out. Would definitely recommend.

Works well on medium-sized tables, in particular glass and wood. Less effective on metal surfaces. Bass response is better than smaller units, but still not great.

It's good but it wasn't worth the fighting with my neighbor to get it.