Wireless Presenter with finger ring design, the slip-ring adjustable to fit finger sizes. The control area with five buttons can be controlled simply by your thumb, supporting both hands for comfortable control all day long. A red and bright laser pointer that's easy to see against most backgrounds, highlight key areas of your slides, super easy to use to keep your eyes on your ence. Equipped with top-grade wireless technology, control range up to 12 meters, so you can move freely around the room and interact with your ence. The mini USB receiver supports plug and play technology. No driver is required. Built-in docking bay stores receiver magnetically so you are less likely to lose your receiver. One-touch keys for easy slideshow control. Buttons: laser pointer, page up, page down, launch slideshow, black screen, switch on/off. Built-in rechargeable Li-polymer battery. You can charge it by a laptop or wall adapter via the standard Micro-USB input port. Comes with auto standby and deep sleep functions for energy saving, equipped with a separate switch that effectively avoids unwanted power consumption when stored in your bag. Supports MS Word, Excel, PowerPoint, ACD See, website, Keynote, Numbers, Pages, Google Slides, Prezi, etc. Supported OS: Win2000, XP, Vista, Win7, Win8, Win10, macOS, Linux. Color: black. Material: PC. Package Contents: 1 x Wireless Presenter, 1 x Receiver, 1 x USB Cable, 1 x Portable Bag. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3 cm.