Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy to use; Long Range

I bought this for my wife to use in her classroom. It requires no drivers, so you don't need administrative access to the PC. It works anywhere in her large classroom. Unlike a typical "presentation remote" this also works as a full-functioned mouse - handy if you want to use it for more than just presentations.The only thing that this one lacks is internal storage for the USB dongle. This is more of a factor for people that are frequently traveling with the device. It does come with a nice carrying box, but may not be the most convenient package for business travelers where size is an issue.Turning the laser on requires a easily-learned, but not obvious, button sequence. This is great for classroom use since she can use the laser, but students can't play with it easily.