GPX Portable DVD Player with Two 7" LCD Displays

Can't wait to use it for our vacation

Tried setting up in the car. Sound quality very poor. Only one side worked a little. Bought new headphones, but still no volume.

While it does have a good clear screen and all the straps and cords to use in a vehicle, the volume is terrible. When we first opened in our home, and tried it, we were satisfied because our home was quiet. Once we set up in the car and pushed play,...