Car DVD navigation which top ten brands?
The receiving module of the satellite signal is an important component of GPS. The chip determines the GPS navigator positioning accuracy, although there is no civilian equipment to ensure accurate positioning, but in order to save costs, many cottage navigation continues to use the old model of the chip, there is drift and positioning are not allowed such a problem. So when you choose the choice of navigation chip to the newer the better. Jia Ming Garmin, any of my tour, Newman Newsmy, constant DEC, Shinco and so on are good brands, are on the list of China's top ten brands to buy the top ten brands on the brand list, buy it can be assured.
Convenient pedestrians and other vehicles to see.
