PORTABLE PRESENTER REMOTE- Finger ring design is practical, perfect fix your hand and no longer misplace your presenter clicker anymore. PLUG PLAY- No need to install software, just plug into the USB, presenter For PowerPoint support page up, page down, black screen, full screen. RIGHT LIGHT LONG CONTROL RANGE- Bright red light that is easy to see against most backgrounds; For Powerpoint remote control range is 98 FT, Light Distance is 328FT,so you can free to move around the room and interact with your audience. WIRELESS PRESENTER SUPPORT- FOR Windows 2003/XP/Vista/7/8/10, FOR Mac OS, FOR Linux, FOR Android; Supported software: For PowerPoint, FOR Google Slides, FOR iWork (Keynote Numbers Pages), FOR Prezi, FOR MS Word, Excel, ACD See, Website, etc. RECHARGEABLE PRESENTER CLICKER: Built-in 120MAH Li battery, with 1 hour fast charging time, support half month using, support auto sleep function to save energy. Delivery Quantity: 1pc Package Contents: Only the above package content, other products are not included. Size: 4.3*3.4cm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Colour: Black (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)