Advanced Privacy Protection: A peephole on the door can increase your privacy. Outside visitors cannot see your home from an outside perspective, giving you a high level of privacy and security. 200 Degree Clear Viewing Angle: Glass lens optics can provide a panoramic image, you can easily see the entire surrounding area from the top of your head to the feet of the person standing outside. Easy to install: Applicable door thickness: 35mm-60mm, suitable for doors, wooden doors, security doors and fire doors. Adjustable Inner Lid: You just need to close the lid when not in use to prevent outside strangers from spying on your house layout, when a stranger knocks on the door, you can open it for identification. Note: 1. Please allow a little error due to manual measurement. Please make sure you dont mind before bidding br 2. Color may vary by monitor. Please understand Note: Hello, please pay attention to your delivery address when purchasing products. If your pickup information (e.g. name, street, house number, doorbell/email with no name) is incorrect, the order will not be delivered correctly. )