3)With three LED lamps and its light resource gear can be adjusted according to the necessity;
4)an ordinary head magnifying glass can be installed only with two AAA batters, whose voltage can be changed from 3V to 4.5V with an automatic voltage booster, which may result in quality problem easily. this head magnifying glass can be installed with three AAA batteries, whose voltage can reach to 4.5V, which can offer sufficient luminance;
5) comparing with ordinary LED light resource, this LED light resource has the functions of environmental protection and energy saving.

To use it with single piece of lens or double lens, be suitable for repair of watch, camera, cell phone and other subminiature parts and observing curio, stamps and other microminiatures, Length of head belt: about 50-60cm

Battery: AAA UM-4*2

Packing term: single be packed in color box, 6pcs be packed in one middle box, 24 pcs per carton of 65x44.5x49cm of G.W. 15KG