The laser pointer can be used to highlight something of interest by projecting a small bright spot of colored GREEN light on to it. It can be used in different areas which include educational and B/s presentation, architecture, astronomy, camp and adventure and entertainment etc. This leaser pointer is commonly used for conference presentations and product demonstrations, letting your speech more freely and customers communicate more easily & naturally. In Astrometry, the beautiful Green laser beam from laser pointer is suitable for night sky observation which can point out the position of the star you are looking at. In architecture, this laser can measure the accurate position of building in the far away distance without close to the dangerous area. In tourism, it can be used to explain the scenery in the distance or all kinds of exhibitions, a good guide and companion for your travel. It will be the best guide for the climber who lost in the mountainous areas, can send out the SOS signal in time. For outdoor adventure, it will be a good tool for pointing out the far away target and sending out the SOS signal, will make your travel more fun and secure.