1. Basic functions: page up and down, full screen black screen, multi-window switching, hyperlink 2. Special functions: digital laser (changeable light spot shape), touch writing, marking on the screen, volume adjustment 3. Support system: Windows7 or higher platform, xp, IOS system, etc. 4. Support software: PDF, WPS, Prezi, web pages, OFFICE office software, etc. 5. Silicone nibs make writing feel sensitive and smooth 6. The light spot is clearly displayed on the LCD screen, and the light spot shape can be set individually 7. With magnifying glass, spotlight, line drawing and other functions 8. One-click to switch multiple scenes 9. Using 2.4GHz wireless remote control technology, the demonstration is more flexible 10. USB charging, it only takes 60 minutes to fully charge the battery 11. One-piece design, magnetic absorption, not easy to lose 12. Transmitter working voltage: 1.5V, output power: about 2mw 13. Receiver working voltage: 4.5-5.5V 14. Battery capacity: 400 mA 15. Remote control distance: 100 meters 16. Size: 150x19.5x11.3mm 17. Weight: 30.5g