Features: *4.3-inch Large Screen: Easily view the situation outside the door with a clear glance, no need to fix it behind the door, allowing freedom of movement. *Long Battery Life: Built-in large-capacity lithium battery, ultra-long battery life. It is recommended to use the screen with power plugged in, and the continuous use time of the screen without power plugging in is: 2H. *High Definition Video: Utilizing 300,000 high-definition pixels, it provides clear and detailed recordings of visitors' faces and items at the door. *Wireless Two-Way Intercom: With a 2.4G wireless signal, the doorbell and display screen can communicate in real-time, eliminating the need for wiring or WiFi. *Easy Installation: The device can be easily installed without the need for drilling holes and supports both and punching installation methods. Specifications: *Product Name:Smart video doorbell *Material:ABS *Size:Doorbell: 107*42mm, Display: 120*95mm *Color:black *Battery capacity: doorbell 800mAh, display 400mAh *Charging method: TYPE-C charging *Power supply voltage: 5V 1A *Display: 4.3 inches Package Content: 1 x Doorbell 1 x Display 1 x Charging cable 1 x Mounting sticker 1 x Screw 1 x Instruction manual Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.