Kensington Pro Fit Mid-Size Wireless Mouse, Graphite Gray (K72423AM)

Nice design. Works well. Easy to setup and use. Nice battery life with handy USB charging!

You just plug the little transmitter thing into a USB port and works perfectly. The ergonomic design keeps me from hitting the wrong button.

I bought this mouse after much browsing to replace an aging Logitech mouse, which had design-based issues from day one. As I work from home, I spend almost all of my time using a mouse - this one has rarely left my hand in the month since I got it, and here's what I think:Pros:*Price - Less expensive than most other mice of its kind, and barring some issues I'll cover later, very much worth it. Amazon's offer for a much lower figure than its standard price is certainly helpful in that regard. Great for most budgets.*Accuracy - Doesn't care what surface it's on, and maintains its connection even without line of sight to its transceiver. The optical lense is very tolerant of dust and such, so it takes far less maintenance than (for example) Logitech laser mice.*Looks - I got the red one, and while it may not look like some sort of sci-fi prop, its sleek-yet-flashy look is still pleasing to the eyes. More importantly, it's comfortable and easily portable at the same time!Cons:* Numerous structural problems, not the least of which is the poor fit for the mouse wheel; mb3 will only click at certain angles or with more force than should be necessary for a button of its type, due to it snagging on the inside of the shell. Secondly, the left and right button plates are prone to snapping slightly into the casing below them, which can have a minor impact on mechanical responsiveness. Lastly, and likely least-importantly, is the flimsy battery bay door, which is prone to popping open if the mouse is dropped (which should not be common, but wireless mice can get away sometimes from certain workspaces!). This shoddy worksmanship is the only reason I'm not giving this mouse a 5 star rating.

Works perfect

I use this at work for my everyday mouse paired with an HP laptop running Windows 7. It's been almost two months now and I'm still on the original batteries. I searched awhile to find one with side buttons, and this one includes that very nice added feature that isn't always included on inexpensive mice. Good feel, seems reliable. It's pretty much attach and go.About the size: I don't like using a tiny travel mouse while traveling and a larger mouse at my desk. I'd rather use the same mouse in every situation. This "mid-size" is a good option as it is smaller for transporting yet large enough for regular use. I have what I would assume are average sized man hands, 9" between the tip of my thumb and pinky finger on my open hand. The mouse is not too small in my opinion.(Note - I bought this to replace a Microsoft branded travel mouse that was nice, except that the rubber around the wheel eventually stretched to the point where the mouse wasn't usable. This Kensington design seems much better suited to everyday use.)

This is very much a Goldilocks story, with the Pro-Fit Mid-Size mouse being too small, and the Pro-Fit Full-Size mouse being too big.For reference, I’ve been using a Microsoft Explorer Mouse model 1362 for over 10 years. I love every aspect of it, particularly how comfortably it fits my hand. I needed another mouse for an additional computer, and decided to try the Kensington Pro-Fit Wireless models.I first went with the Mid-Size mouse since I wear a medium size glove and there were some complaints about the Full-Size model being too large, even for large hands. Unfortunately, the Mid-Size mouse was just too small for my hand: both fingers projected over the front edges of the top buttons (my middle finger by over 5/8” from the front edge of the right button), making use of the scroll wheel and the button behind it very awkward. Also, my thumb rested on the front edge of the front side button, making both side buttons awkward to use as well. Plus, the contour of the top of the mouse felt very unnatural, as I had to flatten my hand quite a bit to rest it fully on the mouse.I then tried the Pro-Fit Full-Size mouse. Unfortunately, it proved to be too large. My index finger was 3/8” short of the front edge of the left button, and I couldn’t extend my thumb far enough forward to reach the front side button. And, as with the Mid-Size mouse, it had the same unnatural feeling top contour, which required me to flatten my hand to fit.Since Kensington doesn’t see fit to provide the dimensions of these mice I thought it would be helpful to provide some elevation and top photos of both mice using quadrille (5 squares per inch) paper for a background. I’ve also included elevation photos of my Microsoft Explorer mouse for comparison.Briefly, the Pro-Fit Mid-Size mouse dimensions are: 4.25L x 2.7W x 1.62H inches. The dimensions of the Pro-Fit Full-Size mouse are: 5L x 3.2W x 1.8H inches. (Any apparent variation in size from one view to another is due to parallax.)Note that the contour of the top of the Explorer mouse is a smooth, almost constant radius curve, both longitudinally and laterally, with a mild drop-off to the right (viewed from the rear). This provides a very comfortable fit to the relaxed human hand. In comparison, the top longitudinal contour of both Kensington mice is a much tighter radius curve for the rear half, becoming almost flat for the front half. There is a pronounced longitudinal ridge down the center, and only a very slight drop-off to the right (when viewed from the rear). That top contour does not fit my relaxed hand at all and, as I mentioned above, I have to flatten my hand quite a bit if I want it to rest on top of either Kensington mouse.On top of the ill fit of both, the Pro-Fit mice scroll wheels have very pronounced and coarse detents, giving them a very rough and cheap feel. Particularly in comparison to the very smooth feel and fine resolution of my Explorer mouse.Both Kensington Pro-Fit mice are being returned, and the search for the perfect mouse continues.If only Microsoft still made their model 1362 Explorer mouse. (;^)

Maybe it works fine on PC, but it's pretty useless on a Mac. There are no drivers and no support, so the extra buttons will never function properly. Mine also will not stay connected. You know what's worse than a mouse that doesn't work? One that works 7 seconds out of every 10. The cursor will just freeze and a second or two later, teleport across the screen. Then it's fine a few more seconds and repeat.I had a Logitech wireless mouse that I plugged in and it just worked. Time to get another one of those.

This is the second time I have purchased this mouse (my first one fell apart after more than a decade of use!) It is the only mouse that comfortably fits into my hand and has a sleek ergonomic design that makes it comfortable to use. The fact that there are no cords is an added bonus!Wonderful product - highly recommend!