PORTABLE PRESENTER REMOTE- Finger ring design is practical, perfect fix your hand and no 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 to move around the room and interact with your audience.WIRELESS PRESENTER SUPPORT- FOR Windows 2003/XP/Vista/7/8/10, FOR OS, FOR Linux, FOR Android; Supported software: For PowerPoint, FOR Google Slides, FOR (Keynote & Numbers & Pages), FOR Prezi, FOR , Excel, ACD See, Website, etc. RECHARGEABLE PRESENTER CLICKER: Built-in 120MAH battery, with 1 hour fast charging time, support half month using, support auto sleep function to save energy.Light Color: Red Radio frequency:2.4GHzLight Class: Light output power:Less than 5MW Working Voltage: 1.5V Built-in 120mAh Lithium battery- by USB cable Light Distance: Up to 100m (328ft) Remote Control Range: Up to 30m (98ft) Colour:black Material:soft plastic Size:43 x 34mm Package Contents: 1 x Wireless Presenter Remote Control 1 x Wireless Receiver 1 x USB Charging Cable 1 x Pouch Case 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 a little different from the real thing.The measurement allowed error is +/- 1-3cm.