Features 【3.97 Inch Color Display】Door Viewer is equipped with 3.97 inch high definition LCD display screen, adopts high power infrared fill light, ensuring good night vision effect. 【Camera Parameter】The peephole camera has a resolution of 1080P, 2MP pixels, and a wide viewing angle of 135°, allowing you to see every detail in the image. 【Excellent function】Video doorbell with motion detection function, automatic recording, 1080P camera resolution, video playback, and adjustable focal length, etc. 【Visitor Recording】When the camera records visitor portrait, it is automatically saved, supports visitor video message, can be used anytime, anywhere. 【Scope of application】Suitable for 15‑30mm door hole, 35‑80mm door thickness. After installing the outdoor camera and indoor display, it can work normally. Specification: Item Type: Video Door Bell Screen Size: 3.97 Inch Screen Resolution: 480 x 800 Camera Resolution: 1080P; Internal Storage: 720P Camera Pixel: 2MP Wide Angle: 135° Infrared Light: 2 Storage Method: Micro Memory Card, support more than 8G memory card, 16G 32G recommended (memory card not included) Language Support: English, Chinese, Russian, French, Italian, German, Japanese, Korean, Czech, Turkish, Arabic Suitable Door Hole: Approx. 15-30mm / 0.6-1.2in Suitable Door Thickness: Approx. 35-80mm / 1.4-3.1in Battery Type: 3.7-4.2V 1400mAh Lithium Ion Battery (built in battery) Charging Interface: Type C Screen Size: Approx. 134.5 x 76 x 13mm / 5.3 x 3 x 0.5in Package List:1 x Indoor Unit 1 x Camera 1 x USB Cable 1 x Mounting Plate 6 x Screws 1 x English User Manual Package List 1 x Indoor Unit 1 x Camera 1 x USB Cable 1 x Mounting Plate 6 x Screws 1 x English User Manual