Logitech R800 Laser Wireless Presenter With LCD display to keep track of time Intuitive slide show controls let you present with confidence and ease. Powerful and clear pointing, even in bright environments, keeps your audience on track. (1) Specifications and Details Remote Presentation Height: 134 mm Width: approx. 38 mm Depth: 28 mm Weight: 71 grams Receiver Height: 58.6 mm Width: approx. 16.5 mm Depth: 7.9 mm Weight: 6 grams (2) Technical Specifications LASER Laser class:: Class 2 laser Maximum output: less than 1 mW Wavelength: 522 to 542 nm (green) (3) Battery Battery type: 2 AAA batteries Battery life (laser pointer): Up to 20 hours Battery life (demonstrator):: up to 1050 hours (4) Connectivity Wireless technology: 2.4 GHz wireless technology Operating Distance: Approx. 30 meters 1Depending on method of use and calculation conditions. (5) Compatibility Logitech dedicated receiver Requires an available USB port Windows® 10,11 or higher