Presentation Clicker with Red Light Pointer-The Powerpoint clicker boasts rf 2.4ghz wireless presenter with highly-sensitive signal without interference from others and can work well within as far as 100 meters. The built-in pointer satisfies national standards for office and classroom. The light is bright and steady to see clearly on any screens (not recommended for LED, LCD) even across a large conference hall. Great Range & Responsiveness-With a wireless range of up to 228ft (70m) and light range of 656ft (200m), this presentation clicker allows you the freedom and flexibility to move away from the screen to engage with the audience.