1. USB receiver, plug and play. Magnetic design to prevent loss. 2. The page can be turned up and down, and the silicone button protrudes to prevent operation errors 3. With the red light indicator, you can easily point out the main focus of the listener and let them follow the demo steps with just one button press 4. 100m operable range, 360 degree control without directional restrictions 5. The battery needs to use a AAA battery (need to be purchased separately), long battery life, easy replacement 6. Triple power-saving design of automatic standby, deep sleep, independent power switch, the product is more energy-saving and durable 7. Low battery reminder function to help you prepare for important speeches 8. Widely used in teaching, training, conferences, presentations, etc. Product Specifications: 1. Laser wavelength: 650nm (red light) 2. RF: 2.4GHz 3. Power: less than 5mW 4. Remote control / laser distance: 100m 5. Battery: One AAA battery (need to be purchased separately) 6. Compatible system: Windows 7/8/10, Mac OS, Linux, Android 4.3 and above 7. USB connector: compatible with USB 1.1 / 2.0 / 3.0 8. Product size: 147x18x15mm 9. Product weight: 23g