VIBOTON PP820A 2.4GHz Multimedia Presentation Remote PowerPoint Clicker Handheld Controller Flip Pen with USB Receiver, Control Distance: 15m(Black)The product is shipped based on the color or size of the main image of the product page.1. 820A is a flip laser pointer, electronic pointer, PPT flip pen laser, remote control pen. 2. With laser, on the page, the next page, full screen, black screen functions. 3. Remote control distance up to 15 meters, flexible control, laser distance up to 200m. 4. Automatic standby, deep sleep, power switch, triple power-saving design, even 1 x AAA battery, but also ensure long-term using. Allows you to prepare for an important speech in advance. 5. With a wireless receiver can be easily stored in the tail button of the wireless projector, carrying very convenient. 6. Advanced RF design, micro power emission, green health and environmental protection. 7. Plug and play, no need to install. 8. Green product, away from the computer's electromagnetic radiation, to create a green teaching environment. 9. Operation system: Windows98/winME/2000/2003/XP/VISTA/Linus & Mac os.