A quality Buler "LCD Door Peephole Viewer " with built in Video / Picture camera DVR recorder. You now can actually see who is in front of your door and even take a picture of the person. Great way to show proof who cam to your door with time stamp. You can also take out the sd card to your computer and email the picture to the police. Unit has a large 2.8" LCD screen (not 2.5" like most other units.. Easy 7. min. installation with full detail instructions.Unit works with three AA batteries. Why should I consider spending any money to get a LCD peephole viewer ... My door viewer works just fine........ FYI ...The following information is to alert you as you would have been if you had attended a local neighborhood watch group or police department meeting recently ( It was in the news in Chicago ) A gang was going from home to home and knocking on doors as homeowners would walk up to look at their peephole viewers the burglars would see the change in the peephole light and know the homeowner was home and was right behind the door now. If you didnt open the door they would kick open the door throwing homeowner on the ground and tying them up for home invasion robberies. With a LCD door viewer the people outside your door will never know if you are home, at the door or even viewing them now.