Tecart A6 Portable Bluetooth Speaker, Wireless Waterproof Shockproof Indoor and Outdoor Speaker with Enhanced Bass Sound and Magnetic Mount, Hands-Free Speaker (Black)

This works fine if you plan on sitting 2-3 feet away but thats about it. The waterproof function is ok.The buttons do different things depending on which music application / source you are using, and I can't understand why you would go through all the effort to then not have the ability to change the volume.