Nirsom&reg; Eye loupe 10X 15X 20X 25X Magnifier Magnifying Eye Glasses Loupe Lens Jeweler Watch Repair LED Light (Double Eye Magnifier) Single eye patch magnifier with adjustable LED. 4 different magnifications can be interchanged quickly. LED light source and battery compartment are designed novelly. Single eye patch can rotate 180 degrees upwards and downwards. LED powered by three LR1130 batteries.