-Small lifespan in intense daily use, tested 4 times, it's the fifth one I buy.
+Very good response in terms of price/performance, no problem with the surface it operates on, as long as it's almost smooth.
+Good design. Good fit in the hand.
One of the few mice that have remained with right & left side buttons/keys.

In general, good and very comfortable mouse, with good response, but the rubber of the scroll wheel and the body is already in a process of reverse counting until it wears out and breaks, tremendous sensitivity to wear.

You won't believe it, but I have had it for 9 years and before that my father had it. I still use it and it is still convenient. It is the best thing, we're talking about 15 years of total use

I have bought many mice from this company, but this one has nothing to do with the previous products. It is a cheap Chinese plastic toy for one-time use, we're talking about such quality. In the 2 years that I had it, the color faded from the buttons, the scroll wheel click broke, and it clicked uncontrollably. I had to disable all the peripheral buttons for the mouse to have some functionality. In the end, I threw it in the trash and felt relieved, it's a shame for the money I spent, and it was quite expensive.

The scroll wheel randomly activates, the left click randomly deactivates.. Shortly after purchasing it.
However, I have a solution to suggest that I found before throwing it away: (WINDOWS 7) Control Panel->Mouse->Mouse and Keyboard Center->Press wheel and deactivate the last three options. If it doesn't fix it, deactivate it from the previous screen and the wheel button. It may require a restart. I hope I helped ;)

Edit: While the above method fixed it for a while, it started doing the same thing again. I don't know if it was affected by an optimization and update suite that I ran.. In this case, completely remove the Mouse and Keyboard Center as recommended by Microsoft, because apparently a driver is poorly written.

The wheelchair is terrible, the wheels are good, it just doesn't have handles and it doesn't suit me at all to use it

It worked for two years with daily hard office work, its blue track is incredible, working non-stop on folders, transparencies, and even my foot is light, fast but very noisy. Unfortunately, within the first 6 months, the scrolling of the wheel started to not respond correctly. It didn't bother me, I just changed the side to do my job, but now after two years, the wheel broke completely! It was worth every penny. RIP, my worthy friend!

A very good and cheap ergonomic mouse, it has a blue laser which (theoretically) has good responsiveness. Because it is ergonomically designed and for left-handed people, it takes some time for the hand to get used to it. I would not recommend it for anyone who wants a small mouse, it is quite big compared to other options. Also, I have huge complaints about its scroll wheel. It does not have feedback at each activation point and it spins freely, making it very difficult to control scrolling.

I bought it because it is wireless, by far the worst mouse I have ever tried, the scroll button is terrible, it doesn't scroll, it requires a lot of force and makes a lot of noise (as much noise as a mouse can make). Don't buy it. Unfortunately, I couldn't return it because I opened the packaging

I bought it two days ago, the scroll wheel simply doesn't work, the page goes wherever it wants when you turn the wheel, I paid 22€ for a mouse that is not worth even 4€, tomorrow I will return it.

I have had it for 6-7 years and I use it daily for many hours. The mouse is amazing. It works on any surface without any issues and with precision. After so many years of use, the rubber covering the scroll wheel finally broke, but it still functions normally. It has exceeded my expectations by far. Other mice I had used had their buttons break within 1-2 years. The only issue is the loud click noise.

Far away, the worst mouse ever, especially its scroll wheel is disgusting. I bought it blindly because in the past Microsoft used to release quality mice that lasted over time! No comparison to back then, simply tragic.

I had a simple Microsoft mouse for about 10 years and I was satisfied. I bought this one and in a week the scroll wheel started falling apart.
In short, the scroll wheel is simply useless and smelly. It does whatever it wants, goes haywire on its own, and I really regret buying it.

I have it for about 2 years. Money wasted in the first few months, the entire plastic part broke and detached from the left side. The wheel is hard to press and turns without wanting to when you press it. The clicks are very loud.

Stay away. I had it for 2.5 years.
1: The wheel started to not respond.
2: The side rubber parts got quite damaged.
3: The clicking noise was loud.
4: The middle click was quite hard, causing the receiver to sometimes come out of its position

Very good, okay not perfect, it is a mouse for everyday internet access but for gaming the sound of the click is annoying. That's why I give it 4 stars because I use it for gaming. But nevertheless, I have had it for 5 years and it works exceptionally well. Only once in the 5 years did the computer not recognize it, but I believe that's normal after 5 years of use.

Well, I have had this mouse for a year and a half. Disappointing purchase, especially for its price. The rubber on the scroll button wears out completely and overall it does not perform well... Also, the clicks are relatively loud... And even if they gave it to me for free, I wouldn't take it anymore!

After three -almost- years of use, I can't find anything bad. Regarding the scroll down button that previous users mentioned, I have to say that yes, it was somewhat hard at first, but after 1-2 months it softened and now it's fine. I haven't encountered any issues, even though I have frequent updates. And in terms of wear, I find it perfectly fine.

Disappointing purchase. The scroll button does not respond properly and the pages go up and down. The soft plastic parts wear out and get destroyed even with careful use. On the side parts and the cushion on the scroll button. It's not worth its money.
To Microsoft's credit, after contacting their customer service, the mouse will be replaced. It will be sent to my address with their own charge via courier.

The scroll button is garbage. Very bad mouse. The pages go up and down on their own. Get something else for sure.