The Logitech R400 Laser Presentation Remote Offers Effortless Presentation Control With Its Ergonomic Design And Intuitive Features. It Includes A Precise Red Laser Pointer For Highlighting Key Points, Intuitive Controls For Seamless Slide Navigation, And Plug-And-Play Simplicity With A Usb Receiver. With A Reliable Wireless Connection Of Up To 50 Feet, Battery Indicator, And Compact Design, It'S Ideal For Dynamic Presentations Anywhere. In The Box: Laser Pointer, Usb Reciever. Product Specifications: Manufacturer: Logitech Battery Type: Aaa Batteries Battery Life: 20-Hour Maximum Dimensions: 4.55 X 1.49 X 1.08 Inches (Hxwxd) Weight: 57 Gm Max Output: Less Than 1M W Wave Length: 640～660Nm (Red Light) Connectivity: 2.4 Ghz Wireless Technology Operating Distance: Approx 32.81 Ft