A magnetic USB receiver embedded in the bottom of the slide clicker makes the presenter remote compact to carry and easy to use. No software is required to install. PLUG-AND-PLAY. The computer remote pointer can be clamped on the file folder or pocket with the clip for easy carry. Highly Sensitive(RF 2.4GHz Wireless Automatic Frequency Hopping Technology Avoids other RF Signal Interference),The 30ft wireless control range gives you the freedom to move around and better interact with the audience. With the bright red light, the audience 't miss a you want them to know. With this presenter clicker,you can interact with your audience and still maintain control of your laptop or pc. This wireless clicker for presentations supports these : FOR 2003/XP/Vista/7/8/10, for OS, for Linux, Android. This remote clicker for presentations supports these office software: PowerPoint/Keynote/Prezi/EXCLE/ACD See//Onenote/ Slides,etc. Battery: 1 AAA battery (not included) Colour:black Material:plastic Size: 139.2 x 18.2 x 19.7mm Package contents: 1 x Wireless Presenter 1 x USB Wireless Receiver 1 x Storage bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.