With 10 built in LEDs, it gives ultra bright white light along with magnification. Lense has diameter of 88 mm and 3x magnigication capability. 3AA alkaline batteries can go for more than 50 hours. These features make it best in class LED magnifier. You can enlarge and zoom the most hard to read 'fine print' or photographs with this 3 x Magnifier Lens. It can be used for for reading, sewing, jewelry, crafts and other work where magnification becomes essential. It helps to reduce strain your eyes to read small fonts or to find coordinates from a map. Also, suitable for many outdoor activities like gardening. It is made from good quality plastic material which ensures, durability and features a hand held design for your convenience. Very easy to use and portable. In nut shell it is excellent, convenient and compact device.