This mouse is a great choice if you plan to mouse on your leg, carpet, bedspread, and other unlikely surfaces. 95% ambidextrous, the position of the thumb button shouldnt be a deal-breaker for left-handers.

As advertised, the mouse tracks better on strange surfaces than an ordinary mouse; You can see the blue LED on the bottom, and blue has a shorter wavelength than red, so the sensor gets a better sampling of the mousing surface.

The scroll wheel has no tactile feedback, though its very smooth; This is a matter of taste, but I prefer clicking; Left-handers could be annoyed at the placement of the thumb button; The mouse is otherwise symmetrical they might have just put aux buttons on both sides.

This mouse is very good. It has multiple programmable buttons and good battery life plus it's wireless. I would recommend it to anyone looking for a reasonably priced mouse.

Very Responsive; perfect size; wireless range

nothing so far

Bought three over the years. I picked it because it had a quieter clicker (higher quality) than most and less annoying when madly clicking. Bang for buck it's the best basic mouse I have ever bought, and I have bought many a mouse over the years.

While there are plenty of wireless notebook mice around, that hasn't stopped manufacturers attempting to try and innovate. Microsoft's latest attempt is the Wireless Mobile Mouse 4000. It's a wee little nipper - 61mm by 103mm - but despite its size it's relatively comfortable.

Small; portable; and full of useful features

Becomes uncomfortable with protracted usage

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

This small but perfectly formed mouse from Microsoft is designed to be used with a laptop computer. To that end it's slightly smaller than the average desktop model, and its tiny USB receiver fits neatly into a slot on the bottom when not in use. That said, it works just as well with any desktop PC.

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

This mouse is small, sleek, and has the bonus of a small transmitter. I use this mouse with my Laptop because i dont really like its touchpad, and it is fantastic. Smooth at running across any surface (even the sofa when im feeling lazy) and has the blue light technology.

I use my mouses with my fingers. So the way the mouse twists as I use it is really strange, I'm used to gaming mouses. A personal thing. But it throws off the whole feel of the mouse for me.

Good mouse; all the pros listed above; looks good

The smooth scroller; off centre sensor at the bottom

I've had 3 of these mice now. Two of them have had a problem with the scroll wheel. The latest one works fine when scrolling down, but the wheel is very sticky when scrolling up. A close examination shows that the rubber of the wheel just rubs against the housing when scrolling up, which makes it...