Microsoft Explorer Mouse is the first Microsoft mouse with its new BlueTrack Technology. Microsoft BlueTrack Technology combines the power of optical with the precision of laser for remarkable tracking on virtually any surfaces like granite countertops, carpet, wood table and even on a rough, unfinished park bench. (does not work on clear glass or mirrored surfaces). Microsoft has 2 series of Explorer Mouse ~ one is desktop version and another mini version for mobile (Microsoft Explorer Mini Mouse). We will talk about the bigger brother ~ Microsoft Explorer Mouse.