I received an Altec Lansing Boomjacket (portable Bluetooth waterproof speaker) for Christmas one year. I made a bracket to hang it underneath the glove box. The bracket is not permanently mounted to the car or the speaker. This allows me to remove the speaker to recharge the battery, as needed. Btw, the charge lasts quite a while. The sounds is amazing and can be very loud, if desired. It doesn’t look bad in the car-it blends in. It is not the perfect sound system as compared to installing new speakers but it is perfect for our use.