This peephole viewer comes with a 3.5 inch large LCD high resolution screen monitor to offer clear video, you just need to purchase 4pcs AAA 1.5V batteries to power it on. Easy installation with the attached screws and bracket, no wires are required. Especially convenient for children and elderly. An excellent door peehole camera monitor to ensure your home security. Featrues - Color: As shown. - Material: Metal. - Size: 2.2 x2.2 cm. - 3.5 inch large LCD color high resolution screen, 2.0 mega pixels camera resolution and 120 degree wide viewing angle lens provide you clear video in a wide range. - Conveient power supply. Just need to purchase 4pcs AAA 1.5V batteries (not included) to power it on. - Easy and clearly to use and recognize . Especially convenient for the children and the elderly, - An excellent door peehole camera monitor to ensure your home security. - Easy installation with the attached screws and bracket, no wires are required. Specification - Screen: 3.5 inch LCD color screen - Resolution: 480 x 320 - Pixel: 2.0 mega pixels - Viewing angle: 120 degree - Power supply: 4 x AAA batteries - Door hole diameter: 14-28mm - Door thickness: 40-100mm - Door peehole camera diameter: 32mm - Monitor: 118 x 62mm Package list: 2 x Indoor monitor 2 x Outdoor x screws 2 pcs x 1 bracket 2 x User manual