Charm & Magic 3.5" LCD Monitor Motion Detection Camera Peephole Door Viewer (2.83.5 inches, Black) Night vision, zoom in and out and monitor outside anytime. Fit any door 32-65 or 67-105mm(need to add extra extension tube that is not included). 3PCS AA battery support to view outside for more than 1200 times(battery not include) Use TF card as external memory, easily to save pictures and video to family computer. Easy to use and can install by yoursef. perfect for homes, apartments, dorm rooms and offices.