Lens material glass Product dimensions L x W x H 275x135x33 mm About this item [Lighted reading magnifier]: The handheld magnifying glass is made of high-quality ABS PMMA lenses to ensure clear images without distortion, lighter than glass, more scratch-resistant, smooth surface, lightweight, ergonomic, optical-grade lenses can keep you clear. Pay close attention to details and relieve intraocular pressure 【Light-emitting reading magnifier】: The lighted reading magnifier has 33 built-in LED lights, has 3 brightness modes, and is equipped with two 2X/13X lenses. The powerful magnifying glass has a USB port and can be charged at any time. The LED magnifying glass can be used continuously for 26 hours in low light conditions; 8 hours in strong light conditions and 6 hours in very strong light conditions. [Large Pocket Magnifying Glass] The portable pocket magnifying glass is very suitable for the elderly, children, macular degeneration patients and people with low vision to use and