This projection map can be regarded as a very good innovation. It combines the projector and the map. It can project the maps we need on any surface, such as the palm, the floor, the wall, etc. What's more surprising is its size, only the size of a lipstick. Moreover, it has GPS function, which will be indicated by a red arrow on the map for your current location. With such a projection map, you won't worry about getting lost wherever you go, and compared with today's GPS navigator, it is more convenient to carry. In addition to projecting maps, if it can also project a lot of other pictures and built-in text, it would be really beyond imagination. Its application range will be wider and wider, and this technology will surely have a very large market.