Rating: 
Summary: MOUSE DOESNT WORK
Review: The first mouse that came simply did not work which I had to return to Amazon.com(which I will say was very accomodating). Then the second mouse worked well at first but then the batteries kept on giving out. I had to keep on moving the batteries to get the power going. I will return my second microsoft mouse and buy a logitech.
Rating: 
Summary: Soft and delicate... a lady?
Review: Well I got this for my new computer and on first try...it was so delicate that if u drop it then I am sure it's finito. This mouse had a terrible squeaky noise everytime I pressed the mouse ..luckily I just sprayed some WD40 (NOT RECOMENDED AT ALL) through the small hole and then it went away overnight. Now it works GREAT. It has a very light feel to it which I personally like.
My wife says that it's a "lady" mouse. Thats for sure as it lacks the weight and bulk of my other Logitech ELITE mouse. In all I would recommend this as it fairly cheap and pretty to look at... My friends have been 50-50 with regards to gaming...some like it others don;'t ... I like it for its lightweight and ease of use. Once u get used to it then it's REALLY good...
Rating: 
Summary: Massively annoying
Review: As I struggled using this microsoft mouse to make it here to write this review, I became more and more furious. I have had this mouse for 6 weeks or so. It wasn't long after buying the mouse that my double click with the left button started to cut out. Sometimes lasting 5 mins other times days. I have spent a few hours on Microsoft Tech support trying to fix it. It finally started working on its own. Today however it stopped working in the middle of a Photoshop project. Can any of you imagine working on a Photoshop project with a left mouse button cutting out? The only thing that kept me from finding out what the interior of this mouse looks like by utilizing a tool I call "My living room wall" is through repeating the serenity prayer while ocaasionally slamming the mouse down on my desk. This thing isn't getting any better for me. If you buy this mouse after I have written this, better check for new drivers or find your receipt.
Rating:
Summary: It worked great ...for 6 weeks (m)
Review: I got this mouse as a Christmas gift. I installed it with no problem (despite the fact that the enclosed software didn't work on my PC) and it worked great. I loved the fact that it was optical because I no longer needed a mouse pad and there was no ball to get covered in cat fur. I also loved not having a cord under my desk to get tangled up in and I was considering getting a wireless keyboard to go with it. 6 weeks to the day after I installed it, it quit working. I tried rebooting, replacing the batteries, changing the channel, reconnecting with the receiver and the best I could get was jerky movements that were hard to control and the left button didn't work. I'm hoping I can return it for store credit and then try the Logitech.
Rating:
Summary: Don't be hasty!
Review: When I first opened this mouse and connected it to my laptop to go, I had so much trouble with erratic tracking that I decided I might be better off with the laptop's touchpad (I hate those touchpads). I boxed the Blue up and was ready to ship it back to Amazon[.com] when I decided to give it a go on my desktop machine (on which I currently use a wonderful MS 5-button wired optical mouse). I had even worse tracking issues than before and at times completely lost functionality. After a quick overview of the troubleshooting in the thin users guide, I decided to "reconnect" the mouse with the receiver. The tracking returned to its original erratic condition that I witnessed on my laptop. So back into the box it went.Before taking the mouse to the post office the following, I decided to give it one last go on my laptop. I certainly wanted this to work or I would not have ordered it. The third time, indeed, was the charm. Tracking was smooth and controlled. I could rest the mouse on any surface (even uneven ones) and still it tracked fine. I was elated that I did give it a couple of chances. I am not completely certain why it was not as smooth out of the box, and I am not sure I could repeat the success I had getting this to function adequately. If you took the time to order this mouse, do yourself a favor and take the time to see if it will work for you.
Rating:
Summary: This product needs some major work.
Review: This mouse worked just fine when I installed it, although its tracking wasn't quite as precise as my corded trackball mouse. After four weeks of flawless cord-free use, the left button would not register a click and then a couple days later the right button ... out also. I tried replacing batteries, uninstalling/reinstalling the software, switching USB/PS2 ports, changing frequencies, etc. and it did not help fix any problems. It seems like Microsoft needs to take this product back to the testing labs and work out the bugs. I would suggest looking for a wireless mouse from a different company or wait to see if Microsoft comes out with a new updated product later in the year. My MS wireless mouse is heading back to the store where it came from.
Rating:
Summary: No good... pointer doesn't move to exact location..
Review: the shape of the mouse is ok, just like the normal optical MS mouse. The size is kind of small, not for big hands male. the most critical problem I found is that the pointer of the mouse will move or "shift" very fast to lower left or right, depending on your motion. Detail description:
While surfing the web, clicking the links, and reading the info, and move and click some more, you will notice the pointer will shift back quicly to the lower left or right corner of the screen. This motion is like the old ball mouse which have tons of dirty blocking the sensors. You have to lift up the mouse and move again.
This is annoying... I have a wirled optical MS mouse, it doesn't have this problem at all. I used a Wireless Logitech Mouse, it doesn't matter either... only happen if the battery is old or it doesn't synz with the "station". Usually, with a little reset on the mouse channel, everything should work proporly again.
However, this is not the case. If you play WC3 and Starcraft, you may find this even more annoying. Finally, if you have the same problem, you are not alone.
Rating: 
Summary: scientist
Review: Its a good plug and play wireless mouse, but i think its not an engineering marvel. This microscoft product being cheaper than its competitors has manufacturing blemishes. The one I bought makes screeching noises when clicked. The wireless makes no difference in traditional computer use. This one has a cumbursome 2 meter chord with the receiver and therefore its like carrying two mice instead of one with your notebook.
Rating:
Summary: Pretty good
Review: I have not experienced the problems everyone else has talked about. Using the USB connection on my Thinkpad, the mouse has been responsive and easy to use (even gaming). Unfortunately, the hub is a little large for mobile computing, and I consider the lack of a power switch a major drawback since it stays on regardless of whether I am using it or not. Battery life was only about 2 months averaging less than 1 hour/day of usage. Short of pulling the batteries out when I put it in my laptop bag, it is always on, not good! For a fixed desktop I would highly recommend this mouse.
Rating:
Summary: really poor performance - don't buy it
Review: Click switch is too deep and isn't adjustable in any way. On top of all, response to a click is slow. It seemed to work well at first, but after a week the click response took even a second sometimes. I'm returning the product. I SUGGEST YOU NOT TO BUY THIS.
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