Wireless computer remote controller Main Function 1.laser pointer 2.page up/down 3.mouse 4.midia center shortcut key 5.visit website 6.open outlook express 7.input letter,number Feature USB plug-and-play. No driver required. System: WINDOWS98/2000/ME/XP Linux & Mac OS Radio Frequency technology. Control distance: up to 20m Working voltage: 3V Sleep current: 1uA Wavelength: 650nm Max output: < 1mW or < 5Mw Packing 1.Gift box Product Size 10x4.5x1.1 cm Battery CR2032 X 1 1.Gift box 2.50PCS/CNT 3.NW/GW:7.6/8.6(KG) 4.CTN SIZE:38X34x24CM