2.4G Wireless Controller Laser Pointer Presenter for PPT Presentation Meeting SpeechFeatures: This pen with RF wireless control is a new product designed specifically for computers and multimedia projectorsIn addition to the traditional usage of pointer, it also has the novel function of turning the pages displayed on the screen of the computer up and down by simply clicking the page down and page up buttons via wireless controlNow teachers and lecturers no longer need to stay beside their computers, they can walk freely in the classrooms or meeting halls, with near distance and more interaction with the audiencesPages could be turned freely and silently, and highlight effects can be obtained in their presentationsFunction Key: Laser button, Previous Page, Next Page, Dark Screen, Escape/Resume, ON/OFF switch, Connect buttonOperating System: Miscrosoft windows 2000/ XP/ Vista/win 7/ win 8 Specifications: Transmitter:RF: 2.400GHz-2.483GHzBattery Type: 1 x AAA battery (Not included)Effective RF Communication Range: 10 meters MaxRF Output Power: 1mW MaxPower Consumption: 30mA maxDimension: Approx. 10.5 x 4 x 2.5cm/ 4.13 x 1.57 x 1inReceiver:RF: 2.400GHz-2.483GHzInterface: USB 1.1/2.0Power: USB Bus Power 5V DC Package Included: 1 x Wireless Presenter Pointer Pen1 x Wireless Receiver1 x Manual