Manufactured with copper materials, this door viewer is durable and sturdy for long time to use. Strong structure, craftsmanship, high hardness, not easy to rust or deform, can meet your needs of home security. suitable for home, office and hotels, etc. Features -Color:Dark Brown -Material:Copper -Size:6.50X4.00X4.00cm/2.55X1.57X1.57in - The door viewer has a clear and high-definition lens for easy viewing, you could see of the outside area. - Adjustable lens for easy viewing. Easy installation on different door thicknesses. Once installed, the viewer yields good results - Anti-theft door viewer to protect your home, provides a clear, wide angle view. From the inside, viewing a person standing near the door. - The door viewer protects your privacy. With no one around the door, you can easily view the entire surrounding area. - Suitable for hotel doors, office and other public areas to enhance security.A must complement for security door monitor. Package list: 1 x peephole front door viewer