I've been using this mouse for three weeks now and it's very good. I used it even on reflective surfaces without problem.The fourth button can be configured to execute custom command, but only one. I use it as AvPag, but can be any key or key combination.I recommend it.

Accurate Tracking; Comfortable Design; Glides Smoothly; Works On Any Surface

A decent mouse for the price. The rubber o-ring that surrounds the scroll wheel lasted about 2 1/2 years before it disintegrated. I still use it though and bought another mouse in a different color for back-up just in case something else was to happen.

The Microsoft Wireless Mobile Mouse 4000 is a small mouse designed to be used with netbooks, and features Microsoft's BlueTrack technology which is designed to offer superior accuracy. The Wireless Mouse 4000 is a little mouse who makes its motion simple.

This is a small mouse but is easy to use. The USB attachment is tiny and can be left in place. Only downside is that the mouse must be switched on before the computer is fired up or the USB toggle removed as otherwise it seems to cause a problem with the start up with my computer running windows 7

The only issue I had with this keyboard was the compatibility with Windows 7. You can download the driver on the Microsoft website, so it's no big deal. I love everything else. The wrist pad is soft, the "my favorites" buttons are awesome, and the zoom button in the middle is useful.

Comfortable Design; Easy To Clean; Great Features; Quiet; Reliable Performance

Limited Compatibility

After years of use, my mouse finally gave it up. I liked the first one so much, when it broke I ordered another of the same model.

I've tried, butnever been able to ditch the mouse and use the touchpad exclusively. I used to buy expensive Logitech mice, and each time they would fail after a year. The computer support person at work recommended the Microsoft mouse. I had my doubts, but he was right.

The size is just right for my small hands. I bot two. the first time I hooked up to a computer USB port about five feet away from the mouse it didn't work well at all. USB was on the side and away from the mouse. I placed it in the back and a foot closer and all is well.

I bought this for use with my laptop but it's so good I replaced my desktop mouse with it. If you want a notebook mouse or even a desktop mouse this one is well worth the consideration.

Great wireless connection Perfect size Smooth tracking Back button Smooth scroll wheel; and has left/right scrolling Great price for what you get; performs better than much more expensive mice

Left/right scrolling with mouse wheel is slow; could be better but I never scroll sideways anyway

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