GPS Navigation

Select the a brand below to view the selection of GPS Navigation products or call us and we can help you find the right one for you.

"I opened Speed of Sound in 1991.  We specialized in car audio, security systems and remote car starters.  In 1994, we started to service multiple car dealers on the NH seacoast.  I have built a reputation through my customers by doing top quality work at a fair price.  Customer service is the most important part of my business."

Chris Jones, CEO