High-Definition Document Camera with Autofocus: Captures A3-size (297 x 420mm) documents in high resolution up to 3264 x 2448P. With a single press of the AF button, it quickly and automatically adjusts focus, keeping images clear even when objects under the lens are moved. It also supports close-up shots of minute objects down to 3.94 inches (approx. 10cm). Visible Teaching Support, Dimmable USB Camera: The dedicated brightness button allows for 10-step fine brightness adjustment. Furthermore, the built-in 14-ring LED achieves 3-step dimming, ensuring clear images even in dark or low-light environments. It also features a self-portrait fill light function, supporting high-quality video production and streaming. Flexible Rotating Design & Folding Function: Adopts an adjustable rotating arm to meet various shooting angle needs. Ideal for education and business scenarios such as board writing, note-taking, and presenting real objects. The foldable design makes it compact for storage and easy to carry during business trips. Built-in Microphone for Clear Audio Transmission: Equipped with a high-sensitivity built-in microphone, it transmits your voice clearly to the other party. It also suppresses noise during recording, achieving clear audio. Provides professional-level sound quality in various scenarios such as online classes, remote meetings (teleconferences), live streaming, YouTube video production, corporate webinars, and remote tutoring. USB Document Camera with Image Flip & Folding Function: The foldable design makes it compact for storage and business trips. Manually adjustable image up/down and left/right flip. You can intuitively adjust the image orientation during video calls and screen output. Enables efficient and clear display in various scenarios such as presenting materials in class, real-time handwritten explanations, and projecting materials in business negotiations.