This is a light pen,A tip in transparent two leds,Through 3 button batteries. This pen is divided into two kinds of surface treatment.The first kind is solid color,That is, directly in plastic
injection . Another kind is painting . Whatever surface treatment,The surface color may according to the customer request,At the same time, you can also choose to sample color .
This is a light pen ,After a light,Can write in the dark;Can find something in the darkness.