Presenter also knows as electronic pointer. (English name:pointer with remote control),This presenter device adopts the latest six axis of gyroscope technology, G-Sensor control movement and direction of the mouse pointer position, realize the air remote control mouse pointer and achieve the function page, It is specially designed by wireless method, control computer and multimedia equipment directly, realize the freedom of electronic document page and random demonstration. When you are in the electronic teaching,presentation,speech,and report, need to note the important content of the instruction, j ust a click with the hand, red points can be mapped on your document content , and will be highlighted on the screen. Whether you are in the classroom, lecture hall, any corner in the hall, you just click the wireless pointer, what you want will automatically appear on the screen It contains air mouse function, uses the gravity induction positioning, you don't need to sit in front of the podium permanent to operate computer, can easily switch over ifferent files and play lists, embody wireless click,unlimited communication. Combinative accelerometer and RF wireless technology to realize the mouse and demonstration function perfectly.Built-in USB interface, plug and play, simple operation, easy to use Software automatic frequency hopping technique, to avoid interference between adjacent users.Smart transmitter design, make the transmitter placed inside the battery cover, effectively prevent the loss.Ergonomic design fits comfortably on your hand. Surface UV paint processing, smooth and durable. Interface Type:USB Hand Orientation:Both Hands Style:Trackballs,Mini,3D,Finger Power Type:Battery Number of Rollers:1 Type:2.4Ghz Wireless Operation Mode:Opto-electronic Model Number:PR-05 Wi-Fi Range:15m Optical Resolution:1800 DPI Product Layout The key instructions : 1.Left Key 2.Right Key 3.Play PPT/Stop/Esc 4.Key 5.Black Screen/Home 6.PPage up 7.PPage down 8.Multifunction key/No of Off /Scroll Wheel 9. Light 10.The battery cover 11.USB Receiver 12.Battery anode 13.Battery Cathode We adothe most advanced RF radio frequency technology, Micro-power emission, harmless to human body, green, health,environmental protection, save electricity CPI: (Gyroscope air mouse) 800/ 1000/ 1200/ 1600CPI Support: Windows XP/Vista/Win7/Win8, above Android4.0 version Product weight: 48.2 g Operating frequency: 2.420GHz~2.480GHz Number of keys: 8 keys Key switch life: 3,000,000 Power dissipation: 3V 17Ma, 24mA when on Color:Black + silver + gray Material:ABS Product size:16.7*3.6*2.7cm Package Contents: 1 * wireless mouse 1 * receiver 1 * instruction manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.