If you are in the market for a GPS navigation system there are a few items that you’ll probably want to consider across all the brands and advertising hype. Price is the first obvious consideration for many individuals, but price must be balanced with what you need from your Sat Nav system since just looking for the lowest price will probably not get you what you want or need. You could very well be sacrificing some useful features or benefits by choosing a less expensive unit. So, look first for the options you want and then shop price among the units chosen.
Screen size and resolution is one of the most important features especially if your vision is compromised in any way. If your buying a vehicle navigation system for a gift, then the screen display size you choose for your teenager can be a bit smaller than the one your purchase for your retired father.
While the overall screen view may be OK, it’s the small navigation icons and other text on the screen. A really large screen might be easier for Dad to see but may be too big and restrict your view when driving, when mounted on the dashboard. No matter what size the display, consider the resolution of the unit. The higher the resolution the more detail and better picture quality you will get when viewing maps, photos, text, and other images.