可折叠式菲涅尔放大镜，带LED 灯 C-7841/C-7842 （两档拉伸设计，第一档，LED灯不亮，第二档LED灯会亮起） Extractable LED Lighting Magnifier (Fresnel Lens) C-7841/C-7842 There are two status of position in which it can be pulled out. When the lens is pulled out to Position 1st, LED does not light up for day light use; When lens is continuously pulled out to the end(position 2nd), LED lights up for the use of dark place. Using two button battery.
