HiRO H50181 4 in 1 2.4GHz WiFi Black Presenter Green Laser Pointer Wireless Mouse Windows Media Player Control Up to 100 FT Ultra Bright Green Laser Pointer 1x Control for Presentation, Wireless Mouse and Multimedia Controls Extended Remote Distance up to 328 ft (Outdoor) 2.4GHz Ensure Interference-FREE control No need for any additional personnel assistance No need to AIM at the USB receiver No driver required even with the dated Windows 98 (2nd Edition) Can be transferred/used on any window-based PC Ergonomic Design, Compact Size No need to carry any additional accessory separately Easy to use like a normal wireless mouse Frequency Range: 2.4 ~ 2.483 GHz Remote Range (Approximate): Indoor - 100 ft/30 m; Outdoor - 328 ft/100 m Laser Specification: Semiconductor Laser Wavelength: 532 nm Emission Duration: Continuous Output Power: &lt; 0.95?W Operating Voltage: Presenter - 2.4~3.3 V; Laser - 2.6~3.3 V Output Power: &lt; 1mW