Designed for quality and comfort, work (or play) all day long with the Advent C112 Keyboard and Mouse Set.Weighing under 100 g, you'll barely notice the mouse as you move it across your desktop. Using an optical LED light, it detects movement relative to the surface you're working on, giving you increased cursor control in nearly all situations.The keyboard features a standard key layout for straightforward, familiar usability. Perfect for everyday use.Setting up is easy. Just plug the keyboard and mouse straight into your computers USB ports. There's no need for batteries. You'll always be powered up and ready for action.