1、Advantages: HD approximate 2.4 inch/6.1cm TFT LCD display with 300,000 pixel, CMOS active digital image sensor and 6 ringtones to choose from. 2、Wide Visible Range: 135 degree wide angle design ensures you to see the whole scene outside the door, and maximize your home safety. When there are suspicious people outside the door, you can find out quickly. 3、IR Night Vision: When the surrounding is lowly lit, the electronic cat's eye will automatically switch to high definition night vision with four IR LED light. It can clearly record the situation outside the door even in dark night. 4、High Quality: Made of hard ABS and zinc alloy material, it's durable, high strength and better prevents external damage. Can easily be installed in iron doors, wooden doors, security doors, glass wooden doors. 5、Monitoring Records: Supports up to 32G TF memory cards, powered by lithium batteries, but lithium batteries are not included. Item Type: Home Video Doorbell Material: ABS, zinc alloy Sensor: 300,000 pixel CMOS active digital image sensor Doorbell: 6 kinds of ringtones to choose from Viewing Angle: 135° Power Supply Mode: AAA x 4 (not included) SD Card Slot: Supports up to 32GB Infrared: 4 infrared LED lights with night vision function. The LED turns on automatically in low light Cat's Eye Aperture: 14-60mm/0.55-2.36in Door Plate Thickness: 35-110mm/1.38-4.33in 1 x Screen 1 x Camera 1 x Mounting Plate 6 x Screw 1 x Instruction Manual