The mouse is the obstacle... Get past that and works great
919431
The mouse that comes with it does not work and also prevents the system access.  Connect a wired mouse and voila.  I did have to connect an extender to be able to use the mouse but it easily tucks away.  For the ability to go Smart without buying a new TV and to have much better apps access than other like devices, it was worth a little mouse manipulation.... But they really should reconfigure so folks don't get install frustrations and give up
1623927
The wireless mouse is excellent for the standard mouse features, however, you cannot customize the side "back" and "forward" buttons without downloading a 60MB+ mousing program (no, I'm not kidding on the size; it took ~15 minutes, even with broadband, to download and unpack) which also has to then run on startup each time. WTH? I expected more from Logitech.

Even so, the mouse works great after all the trouble. It has an excellent lens on the bottom, so it can be used on any surface, flat or otherwise, or even on your own lap, without a mousepad, and from very far away. It seems to work even in the very back of the room. It even comes with its own batteries (batteries included)

So, in conclusion, +1 for excellent hardware; -1 for poor software execution.
2351592
I purchased this mouse to bypass the "Scratch Pad" on my Toshiba laptop. Those pads ar ok if you don't have a mouse but leave a lot to be desired. The only problem I had was getting the thing out of the packaging. The plastic packaging requires either a stiff drink or a lot of strength and patients to get into. When you install a battery in the mouse and plug the USB transmitter in a USB port the mouse will be available for use almost immediately. However, to be able to use the mouse fully, you must download a large file from the Logitech website and install their software to get the mouse to perform correctly. This is pretty much a must do! Once the software has been installed the mouse will do a great job. I am thinking about buying a second one for my desktop PC. I have owned several Logitech products and have found them to be dependable and long lasting. This one is a very good buy. The only minor issue for this mouse that may or may not be a problem for you is the mouse's range. It needs to be very close to the transmitter. My laptop has USB ports on both sides and in the back. I have found that the best place to have the transmitter located is on the same side of the laptop that the mouse is to be used on. The second best place is with the transmitter located on the rear of the laptop and the worst place is on the opposite side from where the mouse will be used. With the transmitter on the opposite side, the mouse is not dependable on MY machine. Before you purchase a cordless mouse consider where your USB ports are located relative to where you will be operating the mouse. There range is fairly limited. If this is not a problem with your PC, this mouse is an excellent performer once the software has been downloaded and installed. The software is free and the website is user friendly. One other item about this mouse. When you install this mouse it does not stop you from using the "Scratch Pad" Both will work at the same time. The software gives you options on using one or both. I selected both and they both work well and at the same time.
3431521
I am still messing around with trying to hook it to my laptop. It doesn't seem to have as much of a distance range and I would like but I am not trying to use it as a normal mouse. I am connected my laptop to my flat screen to get web access from a distance. For standard applications this is a gem. It is just giving me "hiccups" with my application but that is of no fault to Logitech, Amazon or anyone else. For the $$$, I give it five clicks!!! :)
2012533
Works great and really does a nice job of reducing the stress of using a mouse. I gave it 4-stars because of the default position of the right mouse button is the bottom button of the mouse not the one next to the wheel. You can fix this in the included software, but I feel it should not come this way. Also it does not have a wheel bottom, but since there is the third button where your fingers rest it didn't make that big of a deal to me.
3924150
I did have one complaint about this item, but have since learned that it's a technological Bluetooth constraint, and not a problem with this device.

My original goal/hope was to "Bind" this mouse to two different computers, but alas, Bluetooth doesn't support such pairing.

Resigned to use it attached to just one computer, I'm thrilled with it's performance. It is smooth as silk on my table, very responsive, yet provides precision when required. That's an admirable combination that by definition (responsive/precision), are polar opposites.

I've come to despise those stupid computer mice that require you to insert a "Dongle" into your computer's USB port...another hassle, another USB port taken up. But for this product, I just turn it on (the power switch is on the underside).

As a side-note, though I power it off regularly, that should NOT be interpreted as negative against the product. I still have the original (factory) batteries in it and have not suffered any loss. I suspect that my OCD is kicking in, but for regular users like you, the batteries in the remote may last years, even if not powered down as I do. So, as they say, your mileage may vary.
2355111
The mouse arrived yesterday.  Hooking it up was quite easy; download software, plug in and use. I qualify for senior discounts, if that helps with who will be able to do this easily.  I purchased this product because I was getting hand and wrist pain after using my regular mouse all day.  I have alleviated those issues, but now I need to build other fine muscles to use this regularly.  It's not painful, just different.  The buttons are easily customized to your liking.  I wanted to speed up the scroll, as well as the sensitivity, and accomplished that quickly with the software. The hand rest is easy to attach, turn the item upside down and match the item to the stand.  Do it with the mouse off, that laser is powerful!  Also hold the ball when you turn it upside down so it does not drop. My wrist was still in a slightly awkward position when I tried this without the hand rest, so by all means, attach it.

A bonus is that this mouse takes up space, but does not require the movement of a standard mouse.  If you have little desktop space, it's worth the learning curve.  I like to occasionally use my standing position desk with my elevating monitor arms and vented laptop desk with mouse pad, however the mouse pad area does not accommodate all the movement I require, and this trackball is a perfect alternative.

The reason for the 4 stars: The mouse occasionally freezes. I use a 2-monitor setup and that may cause some difficulty, but I notice that if I have too many windows open at once, it tends to freeze.  Once I close a few, it works fine. Uninstalling, then reinstalling the software and that seems to have helped for the most part, still a few glitches, but I'm working on it.

Expect to take a day or maybe for some, a week or more to get used to this one.  It's very different from a standard mouse.
1526941
The mouse is great, no problems with that. The forward/back buttons on the left side are really easy to accidentally push though.
1416970
The mouse usually works pretty well. The keyboard on the other hand must be in direct line of sight of the USB dongle, otherwise it misses about half your keystrokes. Would not recommend.
1620019
I really like the mouse combo, since I come from playing PC first person shooters.  However the amount of pressure required screws me up at times.  Not so much when the game is intense, but I often don't apply enough pressure when I relax a bit.  It can be frustrating at times, and subtracts from the quality of game play.  It takes me out of the game when it does that, which is unecessarily annoying.
608762
The mouse is great in nearly every way: it's portable, the receiver is tiny & doesn't stick out of the USB port (and it fits inside the mouse itself for transport), the battery life is outstanding, and you really can use the mouse on virtually any surface.  But the smooth-scrolling wheel that I thought I'd love... I can't stand it.

The wheel doesn't have any "clicks" or "notches" as you scroll up & down, it's just a smooth, fluid motion.  This scroll wheel, as in most (if not all) cases, is also a middle-click button.  That's where the trouble starts.  I use the middle-click regularly, for several different functions in several different applications, but the big problem comes into play when I'm browsing.  I use Firefox and Tab Mix Plus, and I have the middle-click set up to open links in new tabs (among other things).  With a smooth-scrolling wheel, you have press it straight down, without letting it scroll in either direction while you're pressing it, or else the page you're viewing will move up or down, ever so slightly, and you miss the link you're trying to middle-click.  I know that sounds like a minor inconvenience, but if you middle-click regularly, I promise you it'll annoy you enough to give up on this mouse, even though it's outstanding in every other way.

One other thing: if you're running Windows 7, you'll need to download the newest version of IntelliPoint (just search for IntelliPoint 7).  The version on the included CD will not work on Windows 7.
2748325
This mouse meets/exceeds performance expectations but, unlike a traditional cordless mouse, you need to remember to recharge it before it runs down, since once it does it is "out of service" for several hours.  It may be possible to get a longer cord to plug into the charging cord to keep working while charging, but I have not tried this yet.  There may be a way to tell when it is about to lose power but I have yet to discover what it is.

In all other regards the mouse is really terrific.  I bought it because I was tired of my optic mouse not working consistently on my desk pad.  Not only is this no longer an issue but the other functionality is great.  For me the value is clearly there.
3238026
I have owned this mouse for about 6 months now.  I like the buttons and it fits my hands real well.  However, like some people I don't like the low resistance of the scroll wheel.  Sometimes I find myself scrolling when unintended.  Also, the wheel click is hit or miss.  Sometimes I have to click 3 or 4 times to get it to go through.  This is with the microsoft drivers and I have tested it on multiple computers, so its not a computer thing.  Other than that I really like the mouse, it works on virtually any surface and the placement of the side buttons really work well for me.  Also with the software, the buttons can be programmed to be application specific or global functions.
3320622
This is a great mouse for laptop users, or for anyone liking the small form factor. It is very comfortable and well made... except for the middle button / scroll wheel. It is almost impossible to middle-click without tilting the scroll wheel. If you have the tilt functionality disabled then it's less of a problem, but the click itself is still difficult to achieve. This is a problem if you're trying to middle-click-paste in Linux.
1166053
When I first got my hands on this product, I attempted to install it via plug and play.  It did not work.  Don't do this.  I then installed the software and, I thought, booted up the correct program.  I was wrong here, too.

I gave up and put it in a drawer, attributing the problem to my wonky computer.

I brought it out again today to try with a laptop and was dismayed to have the same difficulties.  I finally went to Logitech's support, and it alerted me to the presence of a different program, the Unifying software.  This does not load on its own, as far as I can tell.  After everything is installed and the receiver it plugged in, you have to manually open up the program and follow its instructions.

That did the trick for me.  I can't imagine I'm the only one having this odd difficulty, and I considered taking a star off for it.  However, now that I have the mouse working, I can't see giving it anything but five stars and a glowing recommendation.

The Dark Field technology sounds silly and gimmicky, but, in fact, it's probably the biggest advance for the computer mouse in a decade.  I'm currently using it on a slick kitchen table.  I even tried it on the floor.  It works on everything and gives even, thick signals and perfect response.  This is handy for a portable mouse and makes mousepads probably obsolete.

It's rather expensive, as it's new technology; I'd say that's the only down side.  If you're willing to pay the money, you won't be disappointed.  Be prepared for it to drop in price by this time next year, however.  Then again, if you're already shelling out $30-50 for a wireless optical mouse, why not spend a bit more and get this?

The mouse is handy, and portable.  I wouldn't call it light compared to other mice, but neither is it heavy.  The scroll wheel is comfortable and works better than any other I've used (and seems to have a few "modes" you can access by pushing it all the way down, either clicky mode or smooth mode), and the back/forward buttons on the side of the mouse are useful (and configurable) if you can avoid hitting them accidentally (which doesn't seem too taxing).  It feels sturdy enough to toss in a bag or backpack, tho I wouldn't want to throw it around too much.  Just don't lose your Unifying receiver.  It does not attach to the mouse (like many other portable mice do); I guess the idea is that you get a Unifying receiver for every computer you're planning to use the mouse with.  As far as I could tell, there is only one receiver packaged here, though consumer models may be different than my reviewer model.

I'm the sort of gamer who has never used a fancy mouse with games, just two buttons and the scroll wheel, so I can't comment upon how it compares to the heavily-buttoned "gaming mouse".  I can say, however, that, again, it gives a very even, solid response and works as well as or better than anything else I've used.  Range seems good, plugged into the back of a desktop PC and is a non-issue with laptops.  Signal interference does not seem to be a problem.  I cannot yet comment upon battery life, as I haven't used it enough to judge.  I'm also unsure if it's necessary to turn it "off" when you're not using it.  Hopefully it turns off automatically when not in use or goes into some kind of battery-saving mode, because I will not remember to turn it off every single time I'm done with it (or even just at the end of the day).

This seems like a great mouse, and I feel pretty confident recommending it with a full score.  I think it's the wave of the future.
3232714
The look is good but it's very difficult to use at first.  There are buttons on the side of the mouse that you always hit them un-intentioaally at first.  Need to learn that and remind yourself to avoid them.  After you train yourself the hard fact that the mouse is not going to change its button location,  you get used to its existence.  Once you get over that, it's a great mouse. It's precise, fast, and it fits nicely to the size of my palm.
3426079
I'm using this at work, and everyone who sits down at my computer hates this thing.  I'm perfectly fine using it, and most importantly my hand doesn't hurt.  I'm picky when it comes to mice, and this one fits most of my criteria.  It is more difficult to have the precision you're used to, which is an issue if you're using Photoshop or AutoCAD or some such.  For Word / Excel / web browsing, it's perfectly fine.