Computer mice are easy to take for granted. Very rarely do people gloat about the power of their mouse like they would about a processor or graphics card, even if they have a nifty device like the Hillcrest Labs Loop Pointer or SideWinder X3 from Microsoft .

Works very well for a basic mobile mouse; Excellent tracking; Comes in five different colors

Not many exciting features; Dull design

Designed for laptops and computing on the go, Microsoft's Wireless Mobile Mouse 4000 is small and comfortable to use.

My 4000 mouse with the v2 transceiver works fine with Intellipoint, but the v1 one does not, and I haven't found a solution. Very disappointing MS software / hardware won't even work together. Since I'm running this on WinXP, I doubt MS support would help me with this problem.

Works on most surfaces; Batteries life seems ok to me; I turn off the power switch when I'm not at my computer; The magnify feature is one of the main reasons I buy / like / use these mice

Rubber on scroll wheel can disintegrate after awhile; Tried storing transceiver in mouse once and needed a pliers to remove it; I'm having a problem with Intellipoint software not recognizing the v1 nano transceiver on this mouse and my 3500 mobile mouse also, so no button customization is possible...

I like the 3500 better but this one comes with the addition of a back button, side-scrolling and is slightly larger in the hand.

takes one battery and has the amazing bluetrack

rocks back and forth on a flat surface; scroll wheel sucks; It has no stoppage between scrolls so is useless for switching weapons in games; It also seems to be inconsistent and stick, As with all microsoft mice with the side rubber, it wears out and gets gross after a few years of constant use

Microsoft has a real winner with the Mobile 4000, it fits great in the hand and its wireless. I highly recommend it.

Highly sensitive; works on almost any surface; nano transceiver

none

I purchased the Mobile Mouse 4000 about 3 weeks ago, and haven't had any problems so far.  It has great range, nice size (not too small like some other 'mobile' mice I've tried before) the USB receiver is nice and small, and conviniently slips into a slot on the underside of the mouse for storage

There's not much to complain about when it comes to the Wireless Mobile Mouse 4000. It's equally suited to both right- and left-handed users, its wireless connectivity reduces cable clutter, and Microsoft's BlueTrack technology means it scrolls beautifully on almost any surface

BlueTrack technology means the mouse works on almost any surface; Suitable for both right- and left-handed users; Contoured shape; Wireless transceiver attaches to undercarriage

Limited battery life of non-rechargeable AA batteries; Smooth vertical rocker lacks precision

WHAT A wireless mouse for use with any laptop, computer or device that has a USB port and capacity for a mouse to be used with it. It does more than a standard Microsoft mouse so is priced higher at ￡25 but the extra features make this a worthwhile way to fritter away a purple note.

Good stability; useful extra features but does remain a basic wireless mouse

Not the long battery life promised by Microsoft

Easily to use even though in your lap... With a Blue beam makes me appeal on it( different to the other mouse) like the Good one too LOGITECH! Like they said if u have a big hand its a little bit annoyed but rather than its nice and comfortable using!! Bought this cheap with a Save cost $$$$ orig.

Great little mouse, just wish that it was bluetooth so that I didn't have to use the dongle on my laptop.

Dongle hides in mouse; Has side scrolling; Works on any surface

A little expensive; No bluetooth; Only one side button