OMO Human Technology Floating Pool Bluetooth Speaker Party Light Show.

You can hang it on a tree or in a room.

You can also play two units at the same time. For better stereo sound . If you buy two of them

The two USB ports are for charging your phone. But will not play any USB memory drives.

Battery lasts 2 to 3 hours.

You can play the OMO  on the water like a boat not under the water like a submarine..

Every OMO will be opened tested and charge 24 hours before I send it out. Better to be safe the sorry.