Easy reading goes wherever you go. Attach it to your key, or wear it around your neck and leave bulky reading glasses at home. Small type, magnified 2.5 times through the acrylic lens, becomes easy to read. The bright red beam allows the eye's pupils to remain open for the best legibility in dim light or no light at all. Ideal for reading menus, theater programs, maps, labels, etc. Key ring/lanyard attachment is included, as is the long-lasting button cell battery. Also includes one-year manufacturer's warranty. Lens measures 3"Lx1 1/2" H.