Logitech Professional Presenter R800 Features Make your point Brilliant green laser pointer helps you get their attention—and keep it. You\"re in control Navigate through your presentation with confidence with the intuitive slideshow controls. Work the crowd The 100-foot (30-meter) range helps you make ordinary presentations extraordinary. Brilliant green laser pointer Powerful and easy to see - even in brightly lit rooms. LCD display Keep track of time, battery, and wireless reception with a glance or with silent, vibrating alerts. You remain focused on your presentation, not the clock. Up to 100-foot (30-meter) range You\"ll enjoy the freedom to move around the room and mingle with your audience for greater impact. A reception-level indicator ensures you don\"t wander too far. Intuitive slideshow controls Buttons are easy to find by touch. And the smooth contours feel great in your hand. You\"ll be in control from the first slide to the last. Plug-and-play wireless receiver There\"s no software to install. Just plug the receiver into a USB port to begin. And when the show is over, you can store the receiver in the presenter. Specs & Details System Requirements PC Windows Vista, Windows 7, Windows 8, Windows 10 or later USB port Technical Specifications DIMENSIONS Height x Width x Depth: 38 mm x 134 mm x 28 mm Weight: 71 g Receiver Height x Width x Depth: 16.5 mm x 58.6 mm x 7.9 mm Weight: 6 g Color: Black Laser Class: Class 2 Laser Max Output: Less than 1mW Wave Length: 522～542 nm (green light) Battery type: 2 AAA batteries Battery life (Laser pointer): 20-hour maximum Battery life (Presenter): 1050-hour maximum Wireless operating distance: Approx 30m 1 Wireless technology: 2.4 GHz wireless technology Supported OS: Windows Vista, Windows 7, Windows 8 Interface: USB Accessories: Carring case Product Origin: China