1. Built-in U disk, users do not need to download through the Internet, double-click the applet to use 2. The surface is made of UV process material, which is wear-resistant and does not fade 3. Digital laser + physical laser, can meet the needs of LCD screen and projection screen demonstration 4. Adjustable light spot color and size 5. Using 2.4GHz wireless remote control technology, the demonstration site can move around flexibly 6. Intelligent gravity sensor time display, built-in digital display 7. With timing reminder, intelligent anti-lost, low battery reminder function 8. Use USB data cable to charge 9. U disk function, plug and play 10. During the demonstration, double-click the laser button to activate the mouse function. You can use the demonstrator as a mouse to control the computer to open hyperlinks, videos, music, etc. 11. Can be used on Windows and Mac systems 12. Transmitter remote control distance: 100 meters, working voltage: 3.0-4.2V 13. Receiver working voltage: 4.5-5.5V 14. Size: 22x34x120mm 15. Weight: 60g 16. Battery capacity: 300mah