4.5-inch high-definition display screen, 's eye head tamper-resistant design 2 million pixel professional security camera 145-degree ultra-wide angle Super night vision function Doorbell function PIR motion detection Human body induction Photo, audio and video recording, video message function 2500MAH high-capacity lithium battery power supply. A of music ringtones to choose from, multi-language The size of the ring tone can be adjusted Maximum support for 32G memory card Support door thickness 35-105MM Door hole range: 15-40MM Due to different batches, there may be differences in product appearance, color, and text, which will not affect the use Colour:black Material:metal+plastic Package Contents: 1 x Indoor host 1 x Outdoor handset 1 x Type-C charging cable 1 x Metal hanging plate 1 x Screw bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.