Check the listing for details. PPT Red Laser Flip Pen USB Wireless RF Remote Presentation Red Laser Pointer. Condition: New. Listed at 11.03 USD. Tittle:PPT Red Laser Flip Pen USB Wireless RF Remote Presentation Red Laser Pointer Product color:Red Battery: One 7th battery (not included) Function: Page up, page down, laser pointer, black screen Working frequency band: 2.4GHz Effective distance: 30 meters RF power: 5mW Operating system: WINDOWS2000, XP, VISTA, MAC Product Features: 1. The remote control can operate the POWERPOINT window back and forth through the remote control. 2. The RF transmission product controls the POWERPOINT window through the RF signal. Each product has a unique ID code, so the signal sent during operation will not interfere with other signals. 3. Use USB interface, plug and play, no need to install .Instructions for use: 1. Put the battery into the remote control . 2. Plug the receiver into the USB interface . 3. The LED on the receiver begins to flash. Press and hold the "Page up" or "Page down" button on the remote for two seconds until . 4. When the LED light is off, press the “Page Up” or “Page Down” button again, the LED light flashes. Precautions: 1. Never look directly at the laser . 2. Do not aim the laser at others . 3. Store in places that are out of reach of children . Package: 1* RF transmitter 1* Receiver 1* Instrument mesh sleeve On Sep-20-18 at 00:56:34 PDT, seller added the following information: