Ergonomic construction gives it a good balance and a comfortable grip, make you feel not too heavy or too light. ? The aged, low vision crowd, macular degeneration, reading books, newspaper, read crossword puzzles,suitable for children to observe insects,repairing electronics, cataloguing coins, help produce small,precise handicraft workers,appreciating flowers potted landscapes etc. ? 20X magnifying lenses are ideal for hands free applications like sewing and knitting, soldering, model building, coins, stamps, jewelry appraisal, watch and electronic repair etc. ? SPECIFICATION OF LED HEAD MAGNIFIER: ? Product Material: Optical lenses ABS ? Single-lens magnifications: 20X ? Specifications: ? Colors: Black ? Battery:CR1620 ? Item weight: 52g ? Package including: ? 1 Glasses Magnifier ? Note: It is highly recommended to do keeping less than 5cm away from the objects. ? Only one eye can be used each time Clear graphics: passed precise optical test, excellent tool reading and natural exploration, with various functions such as anti-scratch and anti-glare, providing a rich reading experience? Eye patches can be moved leftwards and rightwards, and can rotate 180 degrees upwards and downwards. ? Each LED Bulb beside lens, no need external light, powered by 4 CR1620 batteries included. with 2pcs adjustable LEDs to help it work in low-light conditions. No worries about light condition anytime and anywhere. ? Mounted on a black eyeglass frame for hands free use,Sturdy Metal Frame, Arylic Lens can be adjust to any comfy angle. Convenient to magnify articles accurately.This headband magnifier glasses has a very light weigh so that you would not feel any burdened or uncomfortable. ? Ideal for jewelry authentication, jadeite,porcelain,bronzes antique making Inspecting, coin and stamp collecting production, electronics maintain, model building, science, watch repair or fine printing etc. Wide range of uses: You can use a portable magnifier to read books, insects, plants, jewelry, crafts, children's hobby observation, etc.