It is a light head magnifying glass of wide-view scope with 3D lens and light. According to the usage you need, the bracket can be rotated upward or downward for 45 degree, and left or right for 25 degree. With two LED lamps. With automatic voltage booster, which can change the voltage of two AAA batteries from 3V to 4.5V and give enough light. Lighted Magnifier can be used for repairing camera, electric chemical product, electronic part of vehicle and computer etc. Hand Free Magnifier can be used by the technicians in various fields or the workers in precise production fields. The efficiency of LED lamp is over 10 times of ordinary peanut bulb, so it has the functions of environmental protection and energy saving. Magnifying Glass Head band is adjustable. 5 x magnifiers available: 1X 1.5X 2X 2.5X 3.5X (optional). Peanut bulb: 2.2V-0.25A collecting peanut bulb. Battery: 2 x AAA 1.5V batteries (Not Included)