Ultra HD Lens: High quality optical lens with 220 degree viewing angle that provides crystal clear vision with extraordinary wide angle coverage. You can easily see the entire surrounding area from the top of someone's head to toe outside. It provides premium security for you and your family. Increase Privacy: The design of the whole is anti-destruct, anti-drag, and the thick cover is more sturdy and attractive, increases your private life. With the cover in place, visitors outside cannot see through the viewer into your home. Used to allow the user to identify visitors from the security of a locked door, providing the highest level of privacy for your protection and security. Easy to install: the peephole from door is durable solid brass with super simple installation. Suitable for doors 1.5" to 2" thick. Simply drill a 5.75" diameter hole, insert the visor into the hole then screw the two sides together and hand tighten. After installation, you can see a lot of area. Wide Usage: Modern security door peephole and hole for doors. Perfect peephole for home, office, hotel and front door where you need to see, monitor, spy and see who is outside your door when the doorbell rings before opening, giving you more privacy and security. A must-have accessory for any intercom system, security door monitor, door accessories. Provides More Quality Package Contents: 1 black door peephole. We are constantly testing and improving our products to offer you the best quality.