Wireless presenter R400 with cordless USB connection type. Buttons are easy to find by touch and the smooth contours feel great in your hand. You will be in control from the first slide to the last. It will be easy for your audience to see exactly what you are pointing to. The 2.4GHz wireless allows you to enjoy the freedom to move around the room and mingle with your audience for greater impact. Lets you know how much power is available with just a glance. There is no software to install. Just plug the receiver into a USB port to begin. When the show is over, you can store the receiver in the presenter.