its super cool because it shrinks and i did it in only one day in the morning. I tried to use pen but nothing happend so i just came up with that idea insted of useing pen. WARNING! this can hurt your eyes especially for the people that where glasses like I do.it mutiplyes the same thing again and again. It will hurt you eyes. after ONE MIN stop looking at the divce and do some thing else without elictronics cus it will get you sleepy.
