Description This is a plug-and-play wireless receiver. And there’s no software to install. Without complex settings requirement, you just need to plug it into your computer's USB port. You can easily find the quick access for buttons to different functions. Features - Color: Black. - Material: ABS. - Size: 11.00X4.00X2.00cm/4.32X1.57X0.79in - Radio Frequency: 2.4GHz. - Output Power: lt; 5mw. - Wavelength: 650nm. - Remote Distance: 8m - Material and design: Environmentally friendly ABS plastics; Scientific ergonomic design. - Easy to use: A plug-and-play wireless receiver with no software installed;without troublesome settings, just plug in your computer's USB port. - Wireless distance range of up to 26 feet, so you can free to move around the room and interact with your audience. - Support options: With page up and page down buttom, supports MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote Numbers Pages) etc. - Powered by 1 AAA battery(Not Included). Material and design: Environmentally friendly ABS plastics; Scientific ergonomic design |Easy to use: A plug-and-play wireless receiver with no software installed;without troublesome settings, just plug in your computer's USB port |Wireless distance range of up to 26 feet, so you can free to move around the room and interact with your audience |Support options: With page up and page down buttom, supports MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote & Numbers & Pages) etc |Powered by 1 AAA battery(Not Included)