A magnetic USB receiver embedded in the bottom of the clicker makes the presenter remote 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 word you 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 Windows 2003/XP/Vista/7/8/10, for OS, for Linux, Android. This remote clicker for presentations supports these office software: PowerPoint/Keynote/Prezi/Word/EXCLE/ACD See//Onenote/Google 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 are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.