LRX-200RED Rectangular red lighted magnifier with 3x magnification with 2"x4" rectangular lens that provides clear sharp image and a wide field of view for easy map & chart reading and night preservation. (Lens Available with or without 5x bifocal lens) Equipped with a replaceable red wavelength hi-intensity bulb to help preserve night vision. Makes a ideal handheld magnifier for first, sailors, pilots, truck drivers, first responders, military crews, anyone who might need to look at a map, and wishes to preserve their night vision. The LRX-200 is a very durable magnifier, we have been making this model for over 35 yrs with continual improvements to make it more durable and useful. Uses two "AA" batteries. Made in USA