Computer Accessory Sets features: 2.4GHz Wireless Laser PowerPoint Page Turning Pen Multimedia Wireless Presentation Projection Pen with USB Receiver, Remote Control Distance: 30m Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. 1. USB receiver, plug and play 2. The page can be turned up and down, the keys are sensitive 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. You can receive signals in 360 degrees, even if you walk around in the meeting room or classroom, you can control it completely 5. The battery needs to use the AAA battery (need to be purchased separately), long battery life, easy to replace 6. Ultra-compact size and lightweight design, with a pen holder on the back, you can clip it in your pocket after each use 7. Widely used in teaching, training, conferences, presentations, etc. Product Specifications: 1. Color: Black 2. Material: ABS 3. RF: 2.4GHz 4. Light: red light 5. Power: less than 5mW 6. Use space: 200 square meters 7. Remote control distance: 30m 8. Battery: No. 7 battery (need to be purchased separately) 9. Compatible systems: Windows XP / 7/8 or higher, Mac OS, Linux, Android 10. USB connector: compatible with USB 1.1 / 2.0 / 3.0 11. Product size: 135x20x15mm 12. Product weight: 18g Packing list: Presentation pen x 1 Built-in USB receiver x 1