... electric chemical product, electronic part of vehicle and computer etc.* Head Magnifier is designed for ... the works of dentists, doctors and beauticians, jewelers, tailers, stamp collectors* Head light ... : 2 x AAA 1.5V batteries* 4 x magnifiers available: 1.2X, 1.8X, 2.5X, ... use, it is broadly applied to manufacturing and processing preciseproducts, like repairing of cameras, electronic ...