The MP-1800 Laser Pointer is your ultimate partner for State-of-the-Art presentations. Produced with advanced optoelectronics, designed fine, checked strictly, can give you years of reliable service. The MP-1900 Laser Pointer is ideal for use in presentations where various equipment is used, such as slide projectors, TV projectors, LCD panels, film projectors and so on. The MP-1800 Laser Pointer has been manufactured for many years. We will keep manufacturing it. With black plastic shell and very popular view, so it?s sold well all the time. The performance is stable, and the quality is excellent.