With its 2.8" LCD display of 3M pixel sensor, it can show you a high resolution image. Anyone can use it easily, even children and the one with poor eyesight. * The Peephole has a wide visual angle of 60° to ensure you can actually see the people outside. It can show the scene outside your door truly and clearly without any twist. * The one outside won"t realize when you are looking at him. It"s safely for anti-spy. * With a sheet metal, it helps you to remove the traditional peephole; One gummed paper, fix the digital peephole viewer. * Package Contents: 1 x Peephole viewer, 1 x Base Flange, 1 x Peephole len, 1 x Peephole Barrel. Note: 2 pieces of AAA batteries and SD card are NOT included.