SMK-Link VP4560 Wireless StopWatch Presentation Remote Control: * Provides up to 70"/23m of reliable presentation control * Allows the presenter to work the audience away from the host computer * Multiple RF channels eliminate potential interference * The built-in laser pointer with warning LED adds a powerful touch of a professional presentation to capture the audience"s attention * The unique scroll wheel allows effortless maneuvering on long documents such as spreadsheet and webpage * An integrated stopwatch enables the presenter to control timing with ease * The built-in, back-lit LCD display shows time lapses at a glance * Device is designed with transportability in mind whether for long business trips or quick transfer from office to conference room * An integrated dongle storage provides stow-away of the receiver when not in use * A built-on on/off switch saves battery power, helping avoid accidental trigger of laser beam when traveling * Convenient carrying case included * Radio frequency is factory preset to eliminate the need for pairing * True plug-and-play with no need to install software * Supports Windows PowerPoint and Mac Keynote presentation software (note: SlideShow and Application Switch not supported by Mac)