Features: 4.3 inch high-definition display. 2 million professional security camera. Metal material prying cat eye head. 145 degrees wide wide angle. 1800mA lithium battery; easy to use and convenient. Descriptions: Support USB and mobile power supply. Support the door thickness 35-110MM. Door hole range 15-25MM. Energy saving technology, automatic standby. A key to wake up function to watch, easy to operate. Specification: LCD: 4.3 "TFT color screen Perspective: 145 Camera: 2mp Suitable Door: 35~110mm Suitable Peephole: 15~25MM Power supply: 1800mA Size for indoor machine: 134*82*13.5mm Color: black Package Content: 1 x Door Viewer 1 x Outdoor Camera 6 x Screws 1 x Hanging Plate 1 x Certification 1 x Aftersale Service Card 1 x User Manual 1 x Charging Cable 1 x Battery Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Thank you