Wireless Trackball Mouse Remote Control + USB Presen

USB PresenterDescriptions:It is a great tool for PowerPoint wireless presenter! With it, you don't need to stand before your computer or have an additional person click the slide for you! It works as a laser pointer, a optical mouse, a PC remote and a multimedia keyboard. It comes with a transmitter and a USB receiver. Features: Easily control the pace of your presentation: Advanced radio frequency (RF) technology that works through walls and control distance up to 15-meter / 50-feet away, so you never have to stand at beside of your computer. Multifunctional presenter: It combines the functions of laser pointer, a optical mouse and keyboard hotkeys etc. Easy to use: It is USB plug-and-play. No driver required. Just plug the receiver into the USB port on a PC and it works within seconds. Save power design: The device will go to sleep mode after there is no any operation for 30 seconds. It will wake up when any key is pressed. Functions: Laser pointer, Trackball mouse, Desktop/My computer, Close/E-mail, Internet/Favourite, Page up/Zoom out, Page down/Zoom in, Alt/Tab and ESC Product Specifications: Presenter: Interface: Wireless/Radio Frequency Control distance: Up to 15 meters RF FrequencyRF Power: 0dbm Trackball Resolution: Up to 400 dpi Battery: AAAx2 Working voltage: 3V Power consumption: Working mode: 100mA Sleep mode: <1uA Laser distance: Up to 200 meters Wavelength: 650nm Dimension: 125 x 51 x 47 mm Weight-without batteries: 55 grams Receiver: Interface: USB Operation system: Windows 98/Se, Me, 2000, XP, Mac OS, Linux Compatible plug: USB1.1, USB2.0 Working voltage: USB electricity supply (4.5-5.5V) Power consumption: <45 mA Dimension: 73 x 26 x 14 mm Weight: 16 grams