... :Specifications:1, 2.4GHz wireless keyboard; 2, with Milti-touchpad, laser pointer and backlight; 3, rechargeable ... Feature:To enjoy PC, Multi-media, teaching, smart cell phone, projector, and home Entertainment;Convenient & efficient ... , Backlights; Multi-media Keys. Multi-touchpad; Lithium-ion battery.OS required:Compatible with Windows 7 / Vista / XP / 2000 / ... RF 2.4GHz for PC, Cell Phone, Conference