Beam control distance: over 200m Remote control distance: 50M-100M Battery: One AAA battery (AA battery) (without battery) Beam: Red line Specifications: Function: 1. 100m remote control, multi-system compatibility 2. Display, one-button hyperlink, ergonomic design, full-screen black screen mode 3. When the green light is on, the blue light flashes slowly when the battery is low 4. Surface ergonomic design, comfortable grip 5. Matte surface treatment process, not easy to leave marks 6. The physical push button has a raised design, which can be operated freely without looking down, and the presentation is smoother Plug and play, you don't need to install drivers, the USB receiver is compatible with USB1.0, USB2.0, USB3.0, and can be used after plugging in 7. Using 2.4G wireless transmission module, low power, strong performance, suitable for various public class occasions, and precise control makes speech more calm and confident Packing List: 1 * Page Turning Pen 1 * User Manual