Have you ever - a flashlight can double as a makeshift beacon device. If you encounter trouble or get lost, simply turning the light on and off in a certain pattern can alert others while making it easier for rescuers to find you.The next time you find yourself trying to read a book or document in low light, consider using your trusty flashlight. It provides a focused beam that enhanc... http://www.sunlonge.com/product/1379.html