Hardly anyone buys "just" a GPS system or portable unit
. Now you need to have the right GPS accessories too. Now, the use of GPS units has expanded beyond the vehicle. Now it can be used by walkers and bicyclers as well. It's not unusual to spot people wearing and using them when they work-out. Of course not all accessories are created equal, which is why we write articles like this. So we just wanted to try to help you get the biggest bang for your buck.