Do you want to decorate your room with moving stars? Do you want your friends to be more excited at your party? This item could realize your dream! That is 5-in-1 5mw 532nm Open-back Star-projected Green Laser Pointer Pen (2×AAA). It is sure to bring fun to your life. This Open-back Star-projected Green Laser Pointer has a diffraction grating at the end, which splits the laser beam into separate green laser beams and just like the old kaleidoscopes. You can twist it to get a constant green beam. Not only being used as a funny toy to play with, the Open-back Green Laser Pointer Pen is also perfect for astronomy, presentation, tutorial, office meeting and other occasions. Bring this laser to home and have fun with it! You will never regret!