Three new Microsoft Mice with Bluetrack Laser Sensor

Two years after it debuted its first Explorer Mouse with BlueTrack sensing technology, Microsoft is back with another update to its line of pointers. This time around we get three more devices: the Wireless Mouse 3500, the Wireless Mouse 2000, and the Comfort Mouse 4500, all available for presale on Amazon on Wednesday, February 24.

Wireless Mobile Mouse 3500 ($29.95): Like the Wireless Mobile Mouse 4000 that came before it, this update pairs your computer with a small USB plug called a "Nano Transceiver" and features a symmetrical shape with ambidextrous access to the rubber side grips. Available in "Loch Ness Gray" and "Dragon Fruit Pink."

Wireless Mouse 2000 ($29.95): This full-size mouse is slightly larger than the Mobile 3500 and comes in gray only. It also includes the same Nano USB Transceiver that actually snaps into a spot beneath the mouse in a hidden undercarriage when you travel.

Comfort Mouse 4500 ($24.95): This is the first wired mouse to feature BlueTrack, designed for the stationary user who doesn't want to deal with the hassle of changing batteries. Available in black, "Sea Blue," "Poppy Red," and "Strawberry Pink."

The technical highlight of all three mice is BlueTrack, which combines the precision of laser tracking with the wide coverage of a standard optical mouse to let you use it on virtually any surface, with the exception of glass.