This is a smart high-definition projector with 4K and 1080P high-definition resolution, supports Wifi and video projection functions, and has a built-in 3D LED light source. The projection distance range is 1.1-5 meters, and the contrast ratio is as high as 5000:1. 1. Projection effect and performance characteristics: - HD resolution: The projector supports 4K and 1080P HD resolution, providing delicate and clear projection images with more realistic details and colors. - 3D LED light source: Using 3D LED light source technology, it provides a brighter and longer light source life, making the projected content more vivid and lifelike. - Contrast: With a high contrast ratio of 5000:1, the image has stronger contrast and depth in light and dark scenes, improving the viewing experience. 2. Multifunctional applications: - Wifi function: Supports Wifi connection, can wirelessly project content from smart devices, achieving convenient projection without using multiple cable connections. - Video projection: The projector has a built-in video projection function, which can directly play video files from USB or built-in storage, which is convenient for users to watch movies, videos and other content. - Mini mobile phone projector: It has the function of a mini mobile phone projector, which can project the content on the smartphone screen to a larger screen to share audio-visual entertainment. 3. Projection distance and applicability: - Projection distance: It is suitable for the projection distance range of 1.1 to 5 meters. Users can adjust the projection distance according to their needs to obtain the best projection effect and screen size. - Suitable for various scenarios: This projector is suitable for various scenarios such as home theater, business presentations, education and training, etc. Whether watching movies at home or giving presentations in a conference room, it can meet the needs of users. This smart HD 4K 1080P projector features HD resolution, Wifi functionality, 3D LED light source and video projection capabilities. It has a wide range of projection distances and a contrast ratio of up to 5000:1, making it suitable for a variety of scenes. In addition, it also has a mini phone projector function that can project smartphone content onto a larger screen. Whether it is entertainment, business or education, this projector can provide high-quality projection effects and convenient use experience.