Pen shape Video Microscope1) Just plug in TV and observed2) Magnify objects up to 30~50 times 3) 30M pixel(640*480), with build in high brightness LED light4) Can be used for shooting the teeth,hairs and skin in microscope,furthermore inother areas,such as maintaining machinery,inspecting tiny electronic componentsor repairing PCB board,and also used to observe insect,plant and flower in primaryand junior high school teaching.5) Battery:4*AAA (Include)6) Size:205*28*18mm producing area:china