Microsoft Wireless Mobile Mouse 4000 - Graphite. Comfortable Ergonomic design, Wireless, USB 2.0 with Nano transceiver for PC/Laptop/Desktop, works with Mac/Windows Computers

I absolutely love this mouse! I have been using it for school for about a year and a half and am only on the second battery, I have left it on overnight numerous times and still get amazing battery life. This thing is a juggernaut when it comes to battery life! My first battery lasted about a year. It is very small and portable, I like that the usb dongle actually inserts flush into the bottom of the mouse for storage, although I usually just leave it in the laptop since it is so small. This mouse is surprisingly comfortable considering how little it is. I have dropped this mouse off of tables many times and it is still running strong. It works on every surface that I have tried it on, including glass.Pros:- Small and portable- Comfortable to use (at least for me)- Dongle stores inside the mouse so it won't get lost- Dongle is so small it is hardly noticeable when in the computer and does not interfere with my case- Has worked with every computer I have put it in, usually it works right away even though it says it is installing drivers, though I have not used it in a mac- Button on side of mouse is handy, I guess it can be set to perform different functions, but I have not tried yet. From the factory thumb button goes back when surfing the web and can come in handy sometimes- There is a light on the top to let you know when the battery is dying (blinking red) or when the mouse turns on (green)- Well made quality construction- Great battery life, common battery (one AA)Cons:- This mouse may be a bit small if you have large hands- If you are a battery salesman you will not like this mouse as it doesn't burn through batteries very quickly

My previous mouse was this mouse. The scroll wheel rubber fell apart so I bought another as a replacement.I use rechargeable Duracell NiMH 2000mAh AA or used batteries that still have life left. Mouse uses one AA battery. The rechargeable batteries last for weeks. I've never used a new battery in this mouse.Purchased mouse in April 2023 and still in great condition including the scroll wheel rubber.

Both my Macbook Pro and iMac perform terribly with foreign mice and Apple's "mighty mouse" performance is pretty bad in my opinion. As such, this has turned out to be an excellent performing mouse that addressed that issue completely. Not only does the mouse perform excellently but the Microsoft drivers allow it to function like a normal, proper mouse should (even when being used with a Mac). It only takes a few seconds of tweaking the settings after installing the driver and you're good to go.This proved to work so well that I eventually got two of these. I have the smaller version for my laptop (had it for almost 2 years now without any issues) and later got this bigger one for the iMac. I do feel like a bit of a sucker paying $20+ for something as basic as a mouse... but that's life I suppose. Considering how much it improves my experience when working on either Mac, it's well worth every penny.Anyway, as far as this mouse goes...1) Battery life is quite good ( I don't think I replace the rechargeable battery I use more than once a month)2) Ergonomically they're pretty good3) The performance (of the little blue laser) is very good but won't work *everywhere* but will work quite well on many surfaces.4) It's easy to switch on and off5) The USB "fob" is extremely tiny and quite elegant6) The USB "fob" stores very neatly into the bottom of the mouseWhat else is there? It naturally works just as you'd expect with a PC but the real magic happens when you install the drivers, tweak the settings for a moment and use this with a Mac. Bliss.

Works as expected, handles well, only con is range isn't as good as others.

UPDATE NOV 2021: still a great mouse, comfortable enough to use for hours, and everything in my earlier review below holds true. I have one at my desk and another in my travel bag, and just bought another one as backup! However, I wanted to post a caution: when the mouse gets old, DON'T try to clean the wheel. I just destroyed the wheel when cleaning the overall mouse. Rest of the surfaces de-gooked nicely, but the rubber on the wheel is very soft to begin with, and was by this time so old that it started disintegrating.------------- Original review follows -------------We used Microsoft Explorer Blue-track 5-button Mini mice for years, both in office and travel. Must have owned half a dozen, and still have an unopened one. They're no longer made, and the few units available from third-party sellers are crazy expensive. After looking at a number of 4- and 5-button wireless mice, the Wireless Mobile 4000 is the best substitute we've found, and the price is GREAT. We've bought four of them (2 for office and 2 for travel) and at five months of use, all are performing flawlessly. We have not observed any of the issues cited in other reviews.Pros:- Ergonomically very similar to the Explorer mouse- Battery life about as long as the Explorer mouse, even if the mouse is never turned off -- 3-5 months for us- Smooth wheel action- Low-profile dongleCons:- Only 4 buttons (I can live without a "forward" button, but a "back" button is absolutely essential)