Part Number:Health Gearefgwoci324268 Package Dimensions:7.2 x 5 x 2.9 cm; 20 Grams Finish:Finish Material:Material Power Source:PowerSource Voltage:1 Volts Installation method:InstallationMethod Item Package Quantity:1 Included Components:Inc Batteries included?:No Batteries Required?:No Item Weight:20 g Spy hole suitable for door thickness: 35mm-55mm, suitable for wood, fiberglass or metal doors. [Easy Installation]: Suitable for door thickness: 35mm-55mm, suitable for wood, fiberglass or metal doors; Easy to install, replace your door viewer in 5 minutes with no tools required [220 Degree Wide Angle]: 220 degree viewing angle provides the security of identifying visitors from behind a locked door, You can easily view the entire surrounding area from the top of the head to the feet of someone standing outside [Privacy Protection]: A solid, heavy duty viewer cover increases your privacy; With the cover in place, visitors outside cannot see through the viewer into your home, offering the highest level of privacy for your protection and safety [Clearer Vision]: Door Viewer adopts high-tech optical glass lens to ensure a clearer vision; The lens will secure your home against burglary, intrusions and home invasion [Quality Material]: The peep hole for door is made of high-quality Zinc alloy, durable and solid, with polished Chrome finish, which gives the door peephole an elegant touch to complement other door furniture See more product details [Easy Installation]: Suitable for door thickness: 35mm-55mm, suitable for wood, fiberglass or metal doors; Easy to install, replace your door viewer in 5 minutes with no tools required [220 Degree Wide Angle]: 220 degree viewing angle provides the security of identifying visitors from behind a locked door, You can easily view the entire surrounding area from the top of the head to the feet of someone standing outside [Privacy Protection]: A solid, heavy duty viewer cover increases your privacy; With the cover in place, visitors outside cannot see through the viewer into your home, offering the highest level of privacy for your protection and safety [Clearer Vision]: Door Viewer adopts high-tech optical glass lens to ensure a clearer vision; The lens will secure your home against burglary, intrusions and home invasion [Quality Material]: The peep hole for door is made of high-quality Zinc alloy, durable and solid, with polished Chrome finish, which gives the door peephole an elegant touch to complement other door furniture