Logitech Professional Presenter R800, Presentation Wireless Presenter with Laser Pointer Green

Brilliant green laser pointer is easy to see on any presentation screen—even in a brightly lit room.Battery type: 2 AAA batteries,Battery life (Laser pointer): 20-hour maximum,Battery life (Presenter): 1050-hour maximum If you have to constantly reconnect your R800 presenter, try the following: Keep other electrical devices at least 8 inches (20 cm) away from the USB receiver. Move the presenter closer to the USB receiver. Move the USB receiver to different locations. Up to 100-foot wireless range for freedom to move and mingle around the room, Intuitive controls for easy, one-touch slideshow navigation Wave length: 522～542 nm (green light). LCD display with timer and silent vibrating alerts help you manage time without watching the clock. Plug-and-play USB wireless receiver stores inside the presenter for easy pack up. Carrying case included System Requirements PC-Windows Vista, Windows 7, Windows 8, Windows 10 or later, USB port