Teachers Can Use The Usb Overhead Projector, 4K 16Mp Document, And Android. High Pixel Camera: The document camera is equipped with a 16MP camera that can catch ultra high definition real time images with a resolution of up to 3840x3104, 30 fps, ensuring real time and high speed transmission of content without any delays, and presenting every detail clearly for you. Powerful Hardware Strength: Adopting CMOS image sensor with excellent noise reduction and color reproduction ability, suitable for shooting in dim environment, equipped with full automatic phase focusing system to achieve fast and accurate focusing. Multi Angle Adjustment: The product support frame is designed with 5 adjustable angle positions to meet your shooting needs at different angles, suitable for live streaming, live demonstration, web conferencing, distance learning and other scenarios, providing a flexible and convenient use experience. Convenient Office: Document camera can improve office efficiency, with the use of software, a key will be converted into Word, PDF and other types of documents, can also be used for scanning barcodes, ID cards, and other operations, to provide you with a convenient and fast solution for your work. Live Tool: Document camera can be used as a live tool, get rid of the traditional fixed angle of the trouble, flexible adjustment of the camera angle, stable and reliable, can show products, demonstration process, etc., for your live content to add professionalism and attraction.