Do you want to make your trip interesting and your lecture lively? SMALL SUN ZY-559 3mW 650nm Red Laser Pointer with 2 Mode 7 LED (1 x AA Battery) is your best choice. This high power laser pointer which is made of aluminum alloy, is well tested and high quality laser pointer, and easy to use. This laser has fixed focus, continuous output. And the working time is longer than ordinary laser pen. The light beam can point at any targets, such as photos, blackboard, video monitors, project screens, even the stars and so on. This laser must be the best choice for teachers, professors, doctors etc. The maximum output of this laser pointer can get 3mw. The red laser pointer can give out 650nm constant wave. This powerful functional red laser pointer is most frequently used. This laser pointer is a special gift to your friends or relatives. It brings a lot of fun and convenience to your daily life.