Usage Tips:R400 2.4Ghz USB Wireless Presenter Red Laser Pen Pointer PPT Remote Control with Handheld Pointer for PowerPoint PresentationFeatures : brand and high qualityThe Wireless Presenter R400, is designed to help you make your point in a meeting. It\'s got a red laser pointer, is easy to see against most backgrounds and projection surfaces, you can be sure they won\'t miss the point. Its intuitive slideshow controls help you nigate through your presentation with confidence.Built-in slideshow buttons.Contoured one-touch keys for easy slideshow control.Lightweight, portable, comfortable handheld feeling.Plug and play, no software required, makes it simple to get started.Red laser pointer with LED indicator, is easy to see against most backgrounds and projection surfaces.Storable receiver ,easy to use, simply insert the receiver to USB port and it can be used immediately.Battery-power indicator, make you understand the power's situation.Onoff switch, can extend the battery lifetime. Specifications :Material: PlasticColor : BlackEffective Range : Approx. 20mBattery : 2 x AAA batterier (Not include)2.4 GHz wireless technology.USB portOutput power < 0.5mWSystem Requirements : Windows XP, Windows Vista, Windows 7,Windows 8,Windows 10,mac os,iosSize: approx. 11.5 x 3.7 x 2.7cmPackage included :1 x Wireless Presenter Remote Control