Feature: 1. Clear Picture Quality: The smart doorbell has a built-in HD camera, which gives you clear and sharp picture quality and lets you know what's happening near the door at any time. 2. Wireless Connectivity: The smart doorbell uses wireless connectivity so you don't have to worry about power and wiring to connect at any time. 3. 4.3 inch screen: The smart doorbell is also equipped with a 4.3 inch high-definition LCD screen, giving you a clearer view of your visitors. 4. Visual intercom: The smart doorbell supports visual intercom function, allowing you to communicate with visitors by voice, avoiding the risk of opening the door directly to strangers. 5. Multi-level security: The smart doorbell has multiple levels of security, including remote notification, multiple simultaneous viewing, intelligent detection and other features to make your home more secure and reliable. Specification: Item Type: Smart Doorbell Weight: 579g / 20.42oz Product Material: ABS Battery Type: Built-in lithium battery (comes with built-in lithium battery) Battery Model: 105568 Battery Capacity: 5000mAh Smart Doorbell Size: Approx. 14x9.3x2cm / 5.5x3.7x0.8inch Camera Diameter: Approx. 7 cm / 2.76 inch Camera Thickness: Approx. 6 cm / 2.36 inch Package List: 1 x Smart Doorbell 1 x Camera 1 x Mounting Plate 6 x Screws 1 x USB Cable 1 x English Manual 1 x Card Selector