PORTABLE MAGNIFYING GLASS: The magnifying glass is made of high quality double layer optical glass (not resin or acrylic glass), more scratch resistant with extremely high definition. Up to 30X (3000 percent ) actual optical magnification and 4-inch lens provide a wider field of view, even a very small printout can be clearly magnified, allowing visually impaired seniors to read text whatever size. NEW VIERSION added luminance to ensure a better reading experience, even at night or in dark places. The 3 dimmable lighting modes (cool, warm and mixed) can be switched according to different lighting conditions, which can reduce visual fatigue and is very useful for people with macular degeneration. EASY ONE-BUTTON OPERATION: The BUSATIA magnifier is fully assembled without batteries when delivered. The LED light source control adopts a four-level push switch controlled by a simple ON or OFF button. Just load 3 AAA batteries and press the button, then you can enjoy playing again. Easy operation suitable for the elderly and children. Remark: Batteries are not included. PERFECT GIFT FOR THE ELDERLY AND CHILDREN: BUSATIA magnifying glass with light is suitable for seniors who have difficulty checking fine print on instructions, receipts, prescriptions, medicine bottles as well as reading books, newspapers, magazines, etc. it is also useful in children's science class and their natural exploration, which can stimulate their curiosity outside the world.